The Alameda County Mosquito Abatement District has reported that a dead bird found in Dracena Park tested positive for West Nile virus. West Nile virus most commonly spreads through the bite of an infected mosquito. Follow-up investigation by the Abatement District has not identified any West Nile positive mosquitoes in the area.

Abatement District technicians have inspected the area where the bird was found, set mosquito traps, and searched for potential breeding grounds. Public Works staff will continue to coordinate with the Abatement District to review the park for areas of concern and take any recommended preventative actions.

What you can do:

• If you see a dead bird, call 1-877-WNV-BIRD or report it online at westnile.ca.gov. Birds are especially vulnerable to West Nile virus. Mosquito districts throughout the state test dead birds for West Nile virus to track where the virus is spreading.

• If you have mosquito issues on your property, contact the Alameda County Mosquito Abatement District for assistance by calling (510) 783-7744 or filling out an online service request.

• Take precautions to avoid being bitten by mosquitoes. Avoid areas with mosquitoes during the early morning and dusk, when they are most active. Use an EPA approved insect repellent. If possible, wear long sleeves and long pants to decrease areas where they can bite.

This is the first detection of a West Nile virus positive bird in Piedmont for 2024. As of July 12, 13 dead birds testing positive for West Nile virus had been reported in Alameda County. Statewide, 94 birds have tested positive in 2024, a small increase compared to the same time last year. There have been no cases of humans testing positive for West Nile virus in California so far this year.

West Nile virus is transmitted to people and animals through the bite of an infected mosquito. Most people infected with West Nile virus have no symptoms. Around one in five people infected will develop symptoms such as fever, headache, body aches, joint pains, vomiting, or rash. Less than 1% will develop serious illness.

For more information about mosquitoes, West Nile virus, or to request Abatement District services visit mosquitoes.org or call (510) 783-7744.

Resources:

• Alameda County Mosquito Abatement District: Request Services
• Report a Dead Bird (westnile.ca.gov)
• West Nile Virus FAQ & Basics (westnile.ca.gov)