Are There Different Kinds of Yellow Fever?
Labels Yellow Fever
Yellow fever occurs as three subtypes: epidemic (urban), intermediate, and
jungle-acquired. Epidemic yellow fever spreads in densely populated areas
of Africa and South America via the bite of Aedes aegypti (a-E-deez eh-JIPtie)
mosquitoes. Intermediate yellow fever occurs in Africa as the result of
mosquitoes breeding in humid flat grasslands (savannahs) during rainy seasons,
then infecting both monkeys and humans. In dry seasons, the virus
can remain alive in unhatched mosquito eggs that are resistant to the heat.
Jungle-acquired yellow fever occurs mainly in South America when
mosquitoes pick up the virus from infected forest monkeys and then
transmit the disease to humans in jungles and rainforests. People who are
regional settlers, soldiers, or agricultural or forestry workers are at greater
risk for this less common form of the disease.
jungle-acquired. Epidemic yellow fever spreads in densely populated areas
of Africa and South America via the bite of Aedes aegypti (a-E-deez eh-JIPtie)
mosquitoes. Intermediate yellow fever occurs in Africa as the result of
mosquitoes breeding in humid flat grasslands (savannahs) during rainy seasons,
then infecting both monkeys and humans. In dry seasons, the virus
can remain alive in unhatched mosquito eggs that are resistant to the heat.
Jungle-acquired yellow fever occurs mainly in South America when
mosquitoes pick up the virus from infected forest monkeys and then
transmit the disease to humans in jungles and rainforests. People who are
regional settlers, soldiers, or agricultural or forestry workers are at greater
risk for this less common form of the disease.
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