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Kelsey-Seybold Clinic – Your Health Resources

Yellow Fever

September 11, 2020

Learn more about Yellow Fever

What is Yellow Fever?

Yellow fever is a viral illness, carried by some species of mosquitoes in Central and South America, and in tropical regions of Africa. A mild attack may have symptoms similar to those of the flu. More severe symptoms may include nausea, vomiting, bleeding, abdominal pains and yellowing of the skin as a result of liver damage.

Where Is It?

Yellow Fever is a viral disease endemic in the Sub-Saharan Africa and South America.

Countries with Risk Yellow Fever Transmission

Countries with Risk Yellow Fever Transmission

Africa Central and South America
Angola Kenya2 Argentina2
Benin Liberia Bolivia2
Burkina Faso Mali2 Brazil2
Cameroon Niger2 Ecuador2
Central African Republic Nigeria French Guiana
Chad2 Senegal Guyana
Congo, Rep. of the Sierra Leone Panama2
Côte d’Ivoire Sudan2 Paraguay
Dem. Rep. of the Congo2 South Sudan Peru2
Equatorial Guinea Togo Suriname
Ethiopia2 Uganda Trinidad and Tobago2
Gabon   Venezuela2
The Gambia    

1Countries/areas where “a risk of yellow fever transmission is present,” as defined by the World Health Organization, are countries or areas where “yellow fever has been reported currently or in the past, plus vectors and animal reservoirs currently exist.”

2These countries are not holoendemic (i.e., only a portion of the country has risk of yellow fever transmission). Please see above map for details. Countries that require proof of yellow fever vaccination for all arriving travelers1

Countries that require proof of yellow fever vaccination for all arriving travelers1

Angola Gabon
Burundi Ghana
Cameroon Guinea-Bissau
Central African Republic Liberia
Congo, Republic of the Mali
Côte d’Ivoire Niger
Democratic Republic of the Congo Sierra Leone
French Guiana Togo

1 Country requirements for yellow fever vaccination are subject to change at any time; therefore, CDC encourages travelers to check with the destination country’s embassy or consulate before departure.

Prevention Tips

Your best defense is to avoid mosquito bites altogether, but travelers can reduce their risk of acquiring yellow fever by:

  • Taking precautions against exposure to mosquitoes when traveling in areas with yellow fever transmission.
  • Remaining in well-screened or air conditioned areas when possible.
  • Wearing clothing that adequately covers the arms and legs.
  • Applying DEET-containing insect repellent to both skin and clothing.
  • Yellow fever vaccination may be required for entry if you are traveling to, or stopping in a country where the disease exists.

Consult with your local Kelsey-Seybold Travel Clinic to determine if your travel itinerary will require you to be immunized for yellow fever.

Available Immunizations

Immunization is required in certain countries. The vaccine must be administered at an approved yellow fever vaccination center. Contact your local state health department for the nearest vaccination center. Vaccines should receive complete International Certificate of vaccination, signed and validated with the center's stamp where the vaccine was given.

This certificate is valid 10 days after vaccination and for a subsequent period of 10 years. This certificate should be carried with your passport at all times.

Dr. Adesina from Kelsey-Seybold Clinic

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