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Malaria Information and Prophylaxis, by Country [V]

The information presented in this table is consistent 1 with the information in the CDC Health Information for International Travel (the “Yellow Book,” New for 2018).
Click on the linked country name for a malaria map of that country.

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Country Areas with Malaria Estimated relative risk of Malaria for US Travelers2 Drug Resistance3 Malaria Species4 Recommended Chemoprophylaxis5 Key Information Needed and Helpful Links to Assess Need for Prophylaxis for Select Countries
Vanuatu All Moderate Chloroquine P. falciparum 60%
P. vivax 35-40%
P. ovale <1%		 Atovaquone-proguanil, doxycycline, or mefloquine
Venezuela All areas <1,700m (5,577 ft). Present in Angel Falls. Low Chloroquine P. vivax 83%
P. falciparum 17%		 Atovaquone-proguanil, doxycycline, or mefloquine 1) City(ies) of travel
2) State(s) of travelMap of states of Venezuela to look up if a city is within a certain state
Vietnam Rural areas only. Rare cases in the Mekong and Red River Deltas.  None in the cities of Da Nang, Haiphong, Hanoi, Ho Chi Minh City (Saigon), Nha Trang, and Qui Nhon. Low Chloroquine
and
Mefloquine		 P. falciparum 50-90%
P. vivax 10-50%, P. knowlesi rare		 Southern part of the country in the provinces of Dac Lac, Gia Lai, Khanh Hoa, Kon Tum, Lam Dong, Ninh Thuan, Song Be, Tay Ninh: Atovaquone-proguanil or doxycycline.
Other areas with malaria except Mekong and Red River Deltas: Atovaquone-proguanil, doxycycline or mefloquine
Mekong and Red River Deltas: Mosquito avoidance only		 1) City(ies) of travel
2) Province(s) of travel
3) Region(s) of travelMap of provinces of Vietnam to look up if a city is within a certain province

Map of provinces within the Red River Delta

Map of the Mekong Delta Area
Virgin Islands, British None None Not Applicable Not Applicable Not Applicable
Virgin Islands, U.S. None None Not Applicable Not Applicable Not Applicable

1. Factors that affect local malaria transmission patterns can change rapidly and from year to year, such as local weather conditions, mosquito vector density, and prevalence of infection. Information in these tables is updated regularly.
2. This estimate of risk is based on numbers of cases of malaria reported in US travelers and the estimated volume of travel to these countries. In some instances the risk may be low because the actual intensity of transmission is low in that country. In other instances, significant malaria transmission may occur only in small focal areas of the country where US travelers seldom go. Thus even though the risk for the average traveler to that country may be low, the risk for the rare traveler going to the areas with higher transmission intensity will of course be higher. For some countries that are rarely visited by US travelers, there is insufficient information to make a risk estimate.
3. Refers to P. falciparum malaria unless otherwise noted.
4. Estimates of malaria species are based on best available data from multiple sources.
5. Several medications are available for chemoprophylaxis. When deciding which drug to use, consider specific itinerary, length of trip, cost of drug, previous adverse reactions to antimalarials, drug allergies, and current medical history. All travelers should seek medical attention in the event of fever during or after return from travel to areas with malaria.
6. This risk estimate is based largely on cases occurring in US military personnel who travel for extended periods of time with unique itineraries that likely do not reflect the risk for the average US traveler.
7. Primaquine can cause hemolytic anemia in persons with glucose-6-phosphate dehydrogenase (G6PD) deficiency. Patients must be screened for G6PD deficiency prior to starting primaquine.

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