Two additional West Nile virus (WNV) cases were reported in Florida today as Volusia County, on the state’s east coast recorded their 4th case, while Marion County saw their first.

Culex mosquito
Culex quinquefasciatus

The Florida Department of Health (DOH) in Volusia County has received confirmation from the state lab of a fourth human case of West Nile virus disease. There is a heightened concern additional residents will become ill. The county is currently under a mosquito borne illness alert.

Volusia County health officials continue to advise the public to remain diligent in their personal mosquito protection efforts.

Marion County health officials are advising residents of an increase in mosquito-borne disease activity. The confirmed infection of West Nile virus in a human follows the an announcement last month of a Marion County horse had tested positive for West Nile Virus.

For the week ending Oct 18, Florida saw 11 human WNV cases.

Related: Jacksonville woman confirmed positive for St. Louis encephalitis