But about 20 percent of the time, people infected with West Nile virus can develop a sudden flu-like illness with symptoms such as high fever, headache, muscle and joint aches, stomach problems ...

The single-stranded RNA virus known as the West Nile virus (WNV) is what causes West Nile fever. It is a member of the Flaviviridae family, which belongs to the same genus as the Zika virus ...

Four cases of West Nile virus (WNV) have been reported in Jefferson ... One in five will develop a mild or moderate flu-like ...

Severe infection with West Nile virus is a spreading problem worldwide that disproportionately affects those over age 50. And evidence is mounting that when the virus causes sickness, the long ...

The County of Santa Clara Vector Control District confirmed Thursday there is a population of West Nile virus-positive ... pets during this time. The virus does not always cause symptoms, although ...