As temperatures rise and outdoor activities increase during the holiday weekend, it’s important to take precautions against mosquito bites, which can expose you to West Nile virus (WNV). Alameda County has already reported 15 mosquito groups and 38 dead birds testing positive for the virus in 2024, signaling heightened transmission potential in areas like Union City and Fremont.

According to the Alameda County Mosquito Abatement District, the best way to protect yourself is to wear long sleeves and pants, and apply insect repellent containing EPA-approved ingredients like DEET, Picaridin, IR3535, or Oil of lemon eucalyptus. Mosquitoes are most active at dawn and dusk, so try to limit your outdoor time during these hours.

What You Can Do:

1. Dump and Drain:
   Mosquitoes breed in standing water. Eliminate any containers of water around your home—like bird baths, buckets, and flowerpots—or cover them tightly to prevent breeding.
2. Report Unmaintained Pools:
   Neglected swimming pools are a major source of mosquito breeding. If you notice an unmaintained pool, contact the Alameda County Mosquito Abatement District at 510-783-7744.
3. Request Mosquito Fish:
   If you have fish ponds or horse troughs, mosquito fish are available to help control larvae. Residents can pick them up from the district office at 23187 Connecticut Street in Hayward.
4. Report Dead Birds:
   Many birds, especially crows and ravens, are vulnerable to West Nile virus. Report deceased birds by calling 877-WNV-BIRD or submitting information online at www.westnile.ca.gov.

Reduce Your Risk:

• DUMP/DRAIN standing water to prevent mosquitoes from breeding.
• DAWN/DUSK: Avoid being outdoors during peak mosquito activity.
• DEFEND yourself by wearing long pants, long sleeves, and using insect repellent.
• DOOR/Window Screens: Ensure your screens are in good condition to keep mosquitoes out of your home.

About West Nile Virus:

There is no cure for West Nile virus. About 1 in 5 people infected with WNV will experience symptoms like fever, headache, joint pain, and rash. In rare cases, the virus can cause serious neurological illness such as encephalitis or meningitis, particularly in adults over 50 and those with compromised immune systems. Anyone who develops symptoms should seek medical attention immediately.

Horse owners are also reminded that horses are highly susceptible to WNV, but vaccines are available. Contact your veterinarian for timely vaccinations.

By following these simple guidelines, you can help reduce the risk of West Nile virus and protect your community from mosquito-borne diseases. Stay safe and enjoy the outdoors responsibly!