Major infectious diseases In 19 editions of 36.

food or waterborne diseases:

Typhoid fever - An estimated 26 million cases of typhoid fever and 5 million cases of paratyphoid fever occur worldwide each year, causing 215,000 deaths. High-risk regions for typhoid and paratyphoid fever include Africa and Southeast Asia; lower-risk regions include East Asia, South America, and the Caribbean. Typhoid fever is a life-threatening illness caused by Salmonella Typhi bacteria. Paratyphoid fever is a life-threatening illness caused by Salmonella Paratyphi bacteria. The bacteria that cause typhoid fever are most often spread through contaminated food and water and person to person contact. Symptoms of typhoid fever include high fever, weakness, stomach pain, headache, constipation or diarrhea, cough, and loss of appetite. Typhoid fever can be fatal without appropriate antibiotic treatment. CDC recommends that all travelers (even short-term travelers) to affected areas be vaccinated against typhoid fever before travel.

vectorborne diseases:

Malaria - In 2020, an estimated 627,000 people died of malaria—most were young children in sub-Saharan Africa. Nearly half the world’s population lives in areas at risk of malaria transmission in 87 countries and territories (see attached map). In 2020, malaria caused an estimated 241 million clinical episodes, and 627,000 deaths. An estimated 95% of deaths in 2020 were in the WHO African Region. The predominant parasite species is Plasmodium falciparum , which is the species that is most likely to cause severe malaria and death.

Where malaria is found depends mainly on climatic factors such as temperature, humidity, and rainfall. Malaria is transmitted in tropical and subtropical areas, where Anopheles mosquitoes can survive and multiply, and malaria parasites can complete their growth cycle in the mosquitoes (“extrinsic incubation period”). Temperature is particularly critical. For example, at temperatures below 20°C (68°F), Plasmodium falciparum (which causes severe malaria) cannot complete its growth cycle in the Anopheles mosquito, and thus cannot be transmitted.

African Trypanosomiasis - also known as “sleeping sickness”, is caused by microscopic parasites of the species Trypanosoma brucei . It is transmitted by the tsetse fly ( Glossina species), which is found only in sub-Saharan Africa. Two morphologically indistinguishable subspecies of the parasite cause distinct disease patterns in humans: T. b. gambiense causes a slowly progressing African trypanosomiasis in western and central Africa and T. b. rhodesiense causes a more acute African trypanosomiasis in eastern and southern Africa.

Control efforts have reduced the number of annual cases and for the first time in 50 years, the number of reported cases fell under 10,000 in 2009. In 2017–2018, fewer than 2000 cases were reported to WHO. The number of cases continue to drop and in 2020, fewer than 700 combined cases were reported to WHO; over 85% caused by T. b. gambiense and around 15% caused by T. b. rhodesiense . Sleeping sickness is curable with medication but is fatal if left untreated.

Dengue fever - Dengue viruses are spread to people through the bite of an infected Aedes species ( Ae. aegypti or Ae. albopictus ) mosquito. Almost half of the world’s population, about 4 billion people, live in areas with a risk of dengue. Dengue is often a leading cause of illness in areas with risk. Each year, up to 400 million people get infected with dengue. Approximately 100 million people get sick from infection, and 40,000 die from severe dengue.

Dengue has emerged as a worldwide problem since the 1960s. The disease is common in many popular tourist destinations in the Caribbean (including Puerto Rico), Central and South America, Southeast Asia, and the Pacific Islands (see attached regional maps). In the United States, local cases and limited spread of dengue does occur periodically in some states with hot, humid climates and Aedes mosquitoes.

water contact diseases:

Schistosomaisis - also known as bilharzia, is a disease caused by parasitic worms. In terms of impact this disease is second only to malaria as the most devastating parasitic disease (see attached map). Schistosomiasis is considered one of the neglected tropical diseases (NTDs). The parasites that cause schistosomiasis live in certain types of freshwater snails. The infectious form of the parasite, known as cercariae , emerge from the snail into the water. You can become infected when your skin comes in contact with contaminated freshwater. Most human infections are caused by Schistosoma mansoni , S. haematobium , or S. japonicum . Freshwater becomes contaminated by Schistosoma eggs when infected people urinate or defecate in the water. The eggs hatch, and if certain types of freshwater snails are present in the water, the parasites develop and multiply inside the snails. The parasite leaves the snail and enters the water where it can survive for about 48 hours. Schistosoma parasites can penetrate the skin of persons who are wading, swimming, bathing, or washing in contaminated water.

respiratory diseases:

Meningococcal meningitis - Meningococcal disease occurs worldwide, with the highest incidence of disease found in the ‘meningitis belt’ of sub-Saharan Africa (see attached map). In this region, major epidemics occur every 5 to 12 years with attack rates reaching 1,000 cases per 100,000 population. Bacteria called Neisseria meningitidis cause meningococcal disease. About 1 in 10 people have these bacteria in the back of their nose and throat without being ill. This is called being ‘a carrier.’ Sometimes the bacteria invade the body and cause certain illnesses, which are known as meningococcal disease. Other regions of the world experience lower overall rates of disease and occasional outbreaks. Annual attack rates in these regions averages around 0.3 to 3 per 100,000 population. Risk factors for meningococcal disease outbreaks in Africa are not fully understood. However, the following characteristics create favorable conditions for meningococcal disease epidemics: Dry and dusty conditions during the dry season between December to June, Immunological susceptibility of the population, Travel and large population displacements, Crowded living conditions

note 1: widespread ongoing transmission of a respiratory illness caused by the novel coronavirus (COVID-19) is occurring globally; older adults and people of any age with serious chronic medical conditions are at increased risk for severe disease; as of 23 August 2023, 769,806,130 confirmed cases of COVID-19 and 6,955,497 deaths had been reported to the World Health Organization; as of 23 August 2023, 70.5% of the World population had received at least one dose of COVID-19 vaccine

note 2: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for some international destinations (see attached map) currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

note: on 32 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Algeria is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

• bacterial and protozoal diarrhea,
• hepatitis A,
• typhoid fever

vectorborne diseases:

dengue fever, malaria

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Benin is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Botswana is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Burkina Faso is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Burundi is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Cameroon is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; the Central African Republic is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Chad is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and trypanosomiasis-gambiense (African sleeping sickness)

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; the Democratic Republic of the Congo is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; the Republic of the Congo is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Côte d'Ivoire is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

animal contact diseases:

rabies

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria

water contact diseases:

schistosomiasis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Ghana is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

aerosolized dust or soil contact diseases:

Lassa fever

note: on 20 September 2023, the Centers for Disease Control and Prevention updated a Travel Health Alert for a diphtheria outbreak in several states in Guinea; vaccination against diphtheria is essential to protect against disease; if you are traveling to an affected area, you should be up to date with your diphtheria vaccines; before travel, discuss the need for a booster dose with your healthcare professional; diphtheria is a serious infection caused by strains of Corynebacterium diphtheriae bacteria that make a toxin from which people get very sick; diphtheria bacteria spread from person to person through respiratory droplets like from coughing or sneezing; people can also get sick from touching open sores or ulcers of people sick with diphtheria (see attached map)

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and Rift Valley fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Asia; Israel is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

aerosolized dust or soil contact diseases:

Lassa fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Madagascar is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Malawi is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

aerosolized dust or soil contact diseases:

Lassa fever

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Mali is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Mozambique is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria

water contact diseases:

schistosomiasis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Niger is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and yellow fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

aerosolized dust or soil contact diseases:

Lassa fever

note 1: on 4 May 2022, the Centers for Disease Control and Prevention issued a Travel Health Notice for a Yellow Fever outbreak in Nigeria; a large, ongoing outbreak of yellow fever in Nigeria began in September 2017; the outbreak is now spread throughout the country with the Nigerian Ministry of Health reporting cases of the disease in multiple states (Bauchi, Benue, Delta, Ebonyi, and Enugu); the CDC recommends travelers going to Nigeria should receive vaccination against yellow fever at least 10 days before travel and should take steps to prevent mosquito bites while there; those never vaccinated against yellow fever should avoid travel to Nigeria during the outbreak (see attached map)

note 2: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Nigeria is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

note 3: on 20 September 2023, the Centers for Disease Control and Prevention updated a Travel Health Alert for a diphtheria outbreak in several states in Nigeria; vaccination against diphtheria is essential to protect against disease; if you are traveling to an affected area, you should be up to date with your diphtheria vaccines; before travel, discuss the need for a booster dose with your healthcare professional; diphtheria is a serious infection caused by strains of Corynebacterium diphtheriae bacteria that make a toxin from which people get very sick; diphtheria bacteria spread from person to person through respiratory droplets like from coughing or sneezing; people can also get sick from touching open sores or ulcers of people sick with diphtheria (see attached map)

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

animal contact diseases:

rabies

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

aerosolized dust or soil contact diseases:

Lassa fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

dengue fever, malaria, and Rift Valley fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Somalia is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

water contact diseases:

schistosomiasis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

• malaria,
• dengue fever,
• Trypanosomiasis-Gambiense (African sleeping sickness)

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and Rift Valley fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Sudan is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and Rift Valley fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

respiratory diseases:

meningococcal meningitis

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Togo is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

malaria, dengue fever, and Trypanosomiasis-Gambiense (African sleeping sickness)

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Africa; Zambia is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria and dengue fever

water contact diseases:

schistosomiasis

animal contact diseases:

rabies

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

Crimea-Congo hemorrhagic fever, malaria

note: Afghanistan is one of two countries with endemic wild polio virus (the other is Pakistan) and considered high risk for international spread of the disease; before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the US Centers for Disease Control and Prevention (CDC) recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

dengue fever and malaria are high risks in some locations

water contact diseases:

leptospirosis

animal contact diseases:

rabies

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

• Crimean-Congo hemorrhagic fever,
• dengue fever,
• Japanese encephalitis,
• severe fever thrombocytopenia syndrome (SFTS)

soil contact diseases:

hantaviral hemorrhagic fever with renal syndrome (HFRS)

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

dengue fever, Crimean-Congo hemorrhagic fever, Japanese encephalitis, and malaria

water contact diseases:

leptospirosis

animal contact diseases:

rabies

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

Japanese encephalitis, malaria, and dengue fever

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A and E, and typhoid fever

vectorborne diseases:

dengue fever, malaria, and Crimean-Congo hemorrhagic fever

animal contact diseases:

rabies

note: Pakistan is one of two countries with endemic wild polio virus (the other is Afghanistan) and considered high risk for international spread of the disease; before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the US Centers for Disease Control and Prevention (CDC) recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

Crimean-Congo hemorrhagic fever, tickborne encephalitis

degree of risk:

intermediate (2023)

vectorborne diseases:

dengue fever

water contact diseases:

leptospirosis

animal contact diseases:

rabies

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

dengue fever

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea and hepatitis A

vectorborne diseases:

dengue fever

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever

degree of risk:

high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea

vectorborne diseases:

dengue fever

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

dengue fever

degree of risk:

intermediate (2023)

vectorborne diseases:

tickborne encephalitis

degree of risk:

intermediate (2020)

vectorborne diseases:

tickborne encephalitis

degree of risk:

intermediate (2016)

vectorborne diseases:

tickborne encephalitis (2016)

degree of risk:

intermediate (2023)

vectorborne diseases:

tickborne encephalitis

degree of risk:

intermediate (2023)

vectorborne diseases:

tickborne encephalitis

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

Crimean-Congo hemorrhagic fever

degree of risk:

intermediate (2023)

vectorborne diseases:

tickborne encephalitis

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

Crimean-Congo hemorrhagic fever

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued an updated Travel Alert for polio in Europe; the United Kingdom is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus ; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

note: on 21 March 2022, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Asia; the Gaza Strip is currently considered a high risk to travelers for polio; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

Crimean-Congo hemorrhagic fever

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Asia; Israel is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

note: on 31 August 2022, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Asia; the West Bank is currently considered a high risk to travelers for polio; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

water contact diseases:

schistosomiasis

note: on 31 August 2022, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Asia; Yemen is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus ; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea and hepatitis A

vectorborne diseases:

dengue fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea and hepatitis A

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea and hepatitis A

vectorborne diseases:

dengue fever and malaria

water contact diseases:

schistosomiasis

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

dengue fever and malaria

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever, malaria, and Bartonellosis (Oroya fever)

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

malaria

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea and hepatitis A

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever, malaria, and Japanese encephalitis

animal contact diseases:

rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever, Japanese encephalitis, and malaria

animal contact diseases:

Rabies

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

note: on 31 August 2023, the US Centers for Disease Control and Prevention (CDC) issued a Travel Alert for polio in Southeast Asia; Indonesia is currently considered a high risk to travelers for circulating vaccine-derived polioviruses (cVDPV); vaccine-derived poliovirus (VDPV) is a strain of the weakened poliovirus that was initially included in oral polio vaccine (OPV) and that has changed over time and behaves more like the wild or naturally occurring virus; this means it can be spread more easily to people who are unvaccinated against polio and who come in contact with the stool or respiratory secretions, such as from a sneeze, of an “infected” person who received oral polio vaccine; the CDC recommends that before any international travel, anyone unvaccinated, incompletely vaccinated, or with an unknown polio vaccination status should complete the routine polio vaccine series; before travel to any high-risk destination, the CDC recommends that adults who previously completed the full, routine polio vaccine series receive a single, lifetime booster dose of polio vaccine

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial and protozoal diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

intermediate (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

dengue fever

water contact diseases:

leptospirosis

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

water contact diseases:

leptospirosis

degree of risk:

high (2023)

food or waterborne diseases:

bacterial diarrhea

vectorborne diseases:

dengue fever, Japanese encephalitis, and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever and malaria

degree of risk:

very high (2023)

food or waterborne diseases:

bacterial diarrhea, hepatitis A, and typhoid fever

vectorborne diseases:

dengue fever, malaria, and Japanese encephalitis

note: On 20 September 2023, the CDC issued a travel notice for an outbreak of diphtheria in several provinces in Vietnam (see attached map); vaccination against diphtheria is essential to protect against disease; if you are traveling to an affected area, you should be up to date with your diphtheria vaccines; Diphtheria is a serious infection caused by strains of bacteria called Corynebacterium diphtheriae that make a toxin; Diphtheria bacteria spread from person to person, usually through respiratory droplets, like from coughing or sneezing