how yellow fever is transmitted
1 Yellow fever is an acute viral haemorrhagic disease transmitted by infected mosquitoes. 2  The yellow in the name refers to the jaundice that affects some patients. 3  Up to 50% of severely affected persons without treatment will die from yellow fever.
The yellow fever virus is an arbovirus of the flavivirus genus, and the mosquito is the primary vector. It carries the virus from one host to another, primarily between monkeys, from monkeys to humans, and from person to person. Several different species of the Aedes and Haemogogus mosquitoes transmit the virus.