CDC Yellow Book

Yellow Fever & Malaria Information, by Country

Table 3-26. Categories of recommendations for yellow fever vaccination

YELLOW FEVER VACCINATION CATEGORY RATIONALE FOR RECOMMENDATION
Recommended Vaccination recommended for all travelers ≥9 months of age to areas with endemic or transitional yellow fever risk, as determined by persistent or periodic YFV transmission.
Generally not recommended Vaccination generally not recommended in areas where the potential for YFV exposure is low, as determined by absence of reports of human yellow fever and past evidence suggestive of only low levels of YFV transmission. However, vaccination might be considered for a small subset of travelers who are at increased risk for exposure to YFV because of prolonged travel, heavy exposure to mosquitoes, or inability to avoid mosquito bites.
Not recommended Vaccination not recommended in areas where there is no risk of YFV transmission, as determined by absence of past or present evidence of YFV circulation in the area or environmental conditions not conducive to YFV transmission.

Abbreviation: YFV, yellow fever virus.

Country-Specific Information

FOOTNOTES

Yellow Fever
1 The official WHO list of countries with risk of YFV transmission can be found in Table 3-21. Proof of yellow fever vaccination should be required only if traveling from a country on the WHO list, unless otherwise specified. The following countries, containing only areas with low potential for exposure to YFV, are not on the WHO list: Eritrea, São Tomé and Príncipe, Somalia, Tanzania, Zambia.
2 An elevation of 2,300 m is equivalent to 7,546 ft.

Malaria
3 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.
4 Refers to P. falciparum malaria unless otherwise noted.
5 Primaquine can cause hemolytic anemia in people with glucose-6-phosphate dehydrogenase (G6PD) deficiency. Patients must be screened for G6PD deficiency before starting primaquine.

Yellow Fever Maps
1 Yellow fever (YF) vaccination is generally not recommended in areas where there is low potential for YF virus exposure. However, vaccination might be considered for a small subset of travelers to these areas who are at increased risk for exposure to YF virus because of prolonged travel, heavy exposure to mosquitoes, or inability to avoid mosquito bites. Consideration for vaccination of any traveler must take into account the traveler’s risk of being infected with YF virus, country entry requirements, and individual risk factors for serious vaccine-associated adverse events (e.g., age, immune status).
2 Current as of September 2014. This map, which aligns with recommendations also published by the World Health Organization (WHO), is an updated version of the 2010 map created by the Informal WHO Working Group on the Geographic Risk of Yellow Fever.