West Nile Virus
Background and Epidemiology WNV infection first became a public health problem in the United States in the late 1990s. WNV is a mosquito-borne flavivirus in the same family as yellow fever, dengue fever and St. Louis encephalitis. In rare situations, blood transfusion, organ transplant, transplacental, breastfeeding and percutaneous injury of laboratory workers can transmit the … West Nile Virus