Aedes aegypti (Yellow Fever Mosquito)

The Greater Los Angeles County Vector Control District reports that  West Nile virus (WNV) activity continues to be detected in San Fernando Valley mosquitoes, and that residents are urged to use EPA registered repellents when spending time outdoors in the early morning and evening hours to prevent mosquito bites and WNV illness.

This year 10 WNV cases have been reported by the Los Angeles County Department of Public Health, and that 70 percent of those reported cases required hospitalization, according to district spokeswoman Kelly Middleton.

Valley communities reporting the identification and capture of infected mosquitoes include Burbank, Encino, Northridge, Panorama City, Porter Ranch, Sherman Oaks, Sun Valley and Van Nuys.

The virus is transmitted to people and animals through the bite of an infected mosquito. There is no cure for WNV. One in five persons infected with the virus will exhibit symptoms that can include fever, headache, body aches, weakness, and nausea.

These symptoms can last for several days to months. One in 150 people infected with the virus will require hospitalization. Severe symptoms include high fever, muscle weakness, neck stiffness, coma, paralysis, and possibly death.

According to the Los Angeles County Department of Public Health, West Nile virus is a leading cause of severe infections of the nervous system among adults older than 50 years of age in Los Angeles County.

Not all repellents are effective against mosquitoes. For a comprehensive look at repellents, visit

For more information about West Nile Virus, effective mosquito repellants and how to clear places on your property were mosquitoes can breed, visit, or call (562) 944-9656.