West Nile Virus Detected In Orange County: What To Know

ORANGE COUNTY, CA — Health officials are warning residents about the presence of West Nile Virus in Orange County after the virus was detected this week for the first time this year.

Mosquitoes and a dead bird collected in Anaheim and Garden Grove tested positive for the virus, The Orange County Mosquito and Vector Control District said on July 21.

Recently, no cases of humans contracting the virus have been reported, officials said; however, the positive tests signal that the threat of the virus remains present.

West Nile virus is transmitted to humans through the bite of infected mosquitoes, which can get the virus when feeding on infected birds.

“Multiple mosquito samples and a dead bird testing positive for West Nile virus indicate that the virus is circulating in the community,” said OCMVCD Director of Scientific and Technical Services Amber Semrow.

“Anaheim and Garden Grove are historically high-risk areas for West
Nile virus activity. Conditions across the region are favorable for sustained virus activity during the warm summer months.”

Orange County vector officials said they would continue their response by conducting surveillance, inspections and control measures to prevent the bugs from breeding.

"Everyone in Orange County should do their part to prevent mosquitoes. Dumping and draining standing water is the most effective and environmentally-friendly way to rid mosquitoes from
our communities,” said Brian Brannon, a spokesperson for the county's vector control district.

Here's what vector officials recommend to stay safe:

• Dump and drain containers holding water at least once a week
• Clean and scrub bird baths and pet water bowls
• Wear repellent containing DEET, Picaridin, IR3535, or oil of lemon eucalyptus
• Close all unscreened doors and windows to prevent mosquitoes from entering your
• home or space; repair broken or damaged screens
• Wear light-colored, loose-fitting, long-sleeved shirts, and long pants while outside at

The mosquitoes were collected in areas bordered by Euclid Ave., W. Broadway, Interstate 5, and W. Ball Rd. in Anaheim; Magnolia St., W. Cerritos Ave., Gilbert St., and W. Katella Rd. in Anaheim; Haster St., Lampson Ave., Lewis St., and State Route 22 in Garden Grove; and Gilbert St., Lampson Ave., Brookhurst St., and Garden Grove Blvd. in Garden Grove.