No symptoms in most people. Most people (8 out of 10) infected with West Nile virus do not develop any symptoms. Febrile illness (fever) in some people. About 1 in 5 people who are infected develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea, or rash.
West Nile virus (WNV) is the leading cause of mosquito-borne disease in the continental United States. It is most commonly spread to people by the bite of an infected mosquito. Cases of WNV occur during mosquito season, which starts in the summer and continues through fall. There are no vaccines to.
WebMD has answers to some common questions about West Nile virus.. 1. How do people get infected with West Nile virus (WNV)? People get West Nile virus from the bite of a mosquito that has fed on Author: Daniel J. Denoon.
The vector index tell us the relative risk of West Nile virus transmission. The vector index is based on the: Total number of Culex Pipien and Culex Tarsalis – the species that carry West Nile virus; Number of infected mosquitoes across an area.