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Press Release: Local Area Mosquitoes Test West Nile Virus Positive

(STOCKTON, CA) – San Joaquin County Mosquito and Vector Control District’s (District) mosquito-borne disease surveillance program confirmed West Nile virus (WNV) positive mosquito samples found in positive mosquito samples found in positive mosquito samples found in zip codes 95366 and 95367. This is the first find of WNV in San Joaquin County for 2017. “This finding serves as a reminder that mosquitoes carry disease that can harm humans. The District does its part in controlling mosquitoes, however, mosquito control is everyone’s responsibility” said Ed Lucchesi, Manager of the District. “Adult mosquito control activities will increase in accordance with our surveillance results,” said Lucchesi.

With the past winter flooding followed by intermittent warm weather and sporadic rains, it is important that people protect themselves from mosquito bites. Residents and visitors of San Joaquin County can reduce their risk of WNV infection and other mosquito-transmitted diseases by taking these precautions:

  1. Eliminate all sources of standing water on your property that can support mosquito breeding.

  2. Apply insect repellent containing the active ingredient DEET or Picaridin when outdoors, according to label instructions.

  3. Avoid spending time outside when mosquitoes are most active, at dawn and dusk, and especially for the first two hours after sunset.

  4. When outdoors, wear long pants, long-sleeved shirts and other protective clothing.

  5. Exclude mosquitoes from your home with tight-fitting screens on doors and windows.

  6. Contact your veterinarian for information on vaccinating equine against WNV.

  7. Report significant mosquito infestations to San Joaquin County Mosquito &

  8. Vector Control District at (209) 982-4675, 1-800-300-4675.

  9. Report dead birds and tree squirrels to 1-877-WNV-BIRD (1-877-968-2473) or

For additional information, request service, and/or to sign up for the District’s spray notification system, go to

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