Yellow fever is caused by a virus that is spread by the Aedes aegypti mosquito. These mosquitoes thrive in and near human habitations where they breed in even the cleanest water. Most cases of yellow fever occur in sub-Saharan Africa and tropical South America.
Humans and monkeys are most commonly infected with the yellow fever virus. Mosquitoes transmit the virus back and forth between monkeys, humans or both.
When a mosquito bites a human or a monkey infected with yellow fever, the virus enters the mosquito's bloodstream and circulates before settling in the salivary glands. When the infected mosquito bites another monkey or human, the virus then enters the host's bloodstream, where it may cause illness.
Aug. 20, 2014
- Papadakis MA, ed., et al. Current Medical Diagnosis & Treatment 2014. 53rd ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://accessmedicine.mhmedical.com/book.aspx?bookId=330. Accessed June 28, 2014.
- Monath TP. Yellow fever. http://www.uptodate.com/home. Accessed June 28, 2014.
- Yellow fever: Frequently asked questions. Centers for Disease Control and Prevention. http://www.cdc.gov/yellowfever/qa/index.html. Accessed July 1, 2014.
- Protection against mosquitoes, ticks, & other insects & arthropods. Centers for Disease Control and Prevention. http://wwwnc.cdc.gov/travel/yellowbook/2014/chapter-2-the-pre-travel-consultation/protection-against-mosquitoes-ticks-and-other-insects-and-arthropods. Accessed July 1, 2014.
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