Yellow Fever

  • Medical Author:
    Steven Doerr, MD

    Steven Doerr, MD, is a U.S. board-certified Emergency Medicine Physician. Dr. Doerr received his undergraduate degree in Spanish from the University of Colorado at Boulder. He graduated with his Medical Degree from the University Of Colorado Health Sciences Center in Denver, Colorado in 1998 and completed his residency training in Emergency Medicine from Denver Health Medical Center in Denver, Colorado in 2002, where he also served as Chief Resident.

  • Medical Editor: Jerry R. Balentine, DO, FACEP
    Jerry R. Balentine, DO, FACEP

    Jerry R. Balentine, DO, FACEP

    Dr. Balentine received his undergraduate degree from McDaniel College in Westminster, Maryland. He attended medical school at the Philadelphia College of Osteopathic Medicine graduating in1983. He completed his internship at St. Joseph's Hospital in Philadelphia and his Emergency Medicine residency at Lincoln Medical and Mental Health Center in the Bronx, where he served as chief resident.

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What areas are high risk for contracting yellow fever?

Yellow fever is endemic in tropical and subtropical regions of Africa and South America, though an estimated 90% of the cases reported occur in Africa. Most of the cases on the African continent occur in unvaccinated individuals who inhabit the sub-Saharan region. Though no cases of yellow fever outbreaks have ever been reported in Asia, this area remains a theoretical risk because the mosquitoes responsible for transmission, as well as the susceptible primates, are found there.

Picture of countries where yellow fever is present
Countries where yellow fever is present
Source: CDC
AngolaGuyana
ArgentinaKenya
BeninLiberia
BoliviaMali
BrazilMauritania
Burkina FasoNiger
BurundiNigeria
CameroonPanama
Central African RepublicParaguay
ChadPeru
CongoRwanda
Congo, DRCSao Tome & Principe
ColombiaSenegal
Cote d'Ivoire (Ivory Coast)Sierra Leone
EcuadorSomalia
Equatorial GuineaSudan
EthiopiaSuriname
French GuianaTanzania
The GambiaTrinidad & Tobago
GabonTogo
GhanaUganda
GuineaVenezuela
Guinea-Bissau

Several factors determine an individual's risk of acquiring yellow fever during travel, including the area of travel, season, immunization status, duration of exposure, activities during travel, and the local rate of virus transmission.

Medically Reviewed by a Doctor on 6/15/2015

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