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Malaria - and its cousin, yellow fever - had significant implications during the war and the debilitating consequences of the disease were already certain before the Civil War had started in earnest and well before its final history had been written.
In this article. Yellow fever is a viral infection transmitted by a bite from infected mosquitoes most commonly found in parts of South America and Africa. When transmitted to humans, the yellow fever virus can damage the liver and other internal organs and be potentially fatal. few different species of mosquitoes transmit the yellow fever virus; some breed in urban areas, others in jungles. Mosquitoes that breed in the jungle also transmit yelllow fever to monkeys, who, in addition to humans, are a host for the disease.