Sanford, Fla.-(Newsradio 970 WFLA)-Something else to worry about. The Seminole County Health Department says three of the county's sentinel chickens have tested positive for the West Nile Virus.

The chickens are placed in various positions around the county to alert health workers that some form of mosquito-borne illness is being carried around the area. The chickens are tested at least once a week.

West Nile is potentially fatal. So far, there have been no human cases of west Nile reported in Seminole County. Sentinel chickens in other areas have tested positive for other mosquito-borne illness. Encephalitis has been found in some chickens and chikungunya in others.

The Florida Department of Health urges you to protect against mosquito bites. Use repellent and cover the skin when outside. You are also urged to eliminate any standing water around your home to keep mosquitoes from breeding.