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yellow fever
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Aedes aegypti William Crawford Gorgas standing on a deck, wearing a military uniform with a jacket, high boots, and a cap.
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Infographic showing estimated lives saved by childhood vaccinations worldwide from 1974 to 2024, with syringe-shaped bars for each disease. Measles tops the list at 93.71 million lives saved, followed by tetanus, whooping cough, and others, for a total of 153.84 million lives saved. Vaccines by the numbers
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Aedes aegypti
Aedes aegypti The Aedes aegypti mosquito is a carrier of the viruses that cause chikungunya fever, yellow fever, and dengue.

yellow fever

disease
Also known as: Yellow Jack, saffron scourge
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yellow fever, acute infectious disease, one of the great epidemic diseases of the tropical world, though it sometimes has occurred in temperate zones as well. The disease, caused by a flavivirus, infects humans, all species of monkeys, and certain other small mammals. The virus is transmitted from animals to humans and among humans by several species of mosquitoes. Yellow fever appears with a sudden onset of fever, chills, headache, backache, nausea, and vomiting. The skin...

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