Two additional human cases of the West Nile virus have been reported in Central Florida, health officials said on Friday.
Volusia County health officials said they received confirmation from the state lab of a fourth human case of the virus on Friday.
The report in Volusia County comes weeks after two other victims of West Nile were confirmed-- the third was a female in her 30s and the second victim was an elderly male.
Another West Nile virus human case was reported in Marion County on Friday, health officials said.
The confirmed infection of West Nile virus in a human follows the department's Sept. 16 announcement that a Marion County horse had tested positive for West Nile virus.
Both Marion and Volusia counties are under a mosquito-borne illness advisory.
Details about the victims were not immediately available.
There is a heightened concern additional residents will become ill in both counties, health officials said.
Health officials are urging residents to "Drain and Cover," by draining standing water to stop mosquitoes from multiplying, covering skin with clothing or repellent and covering doors and windows with screens to keep mosquitoes out of your house.
The West Nile virus has been reported in chickens in Orange, Seminole, Brevard and Flagler counties.