News Details

Northwest Mosquito and Vector Control District Finds Eastvale Mosquito Samples Positive for West Nile Virus

Northwest Mosquito and Vector Control District has collected its third positive mosquito sample in the area North of Limonite Avenue and West of Sumner Avenue with West Nile virus (WNV).

West Nile virus is transmitted to humans and animals through the bite of an infected mosquito. Approximately 20% of the humans infected experience mild symptoms, such as fever, headache and body aches. Less than 1% of individuals will develop serious neurologic illness.

The elderly, children or individuals with compromised immune systems are usually at higher risk of experiencing further manifestations of the disease. Anyone with symptoms should contact their health care provider. The District requests that residents avoid creating standing water sources on their property. If they know of a standing water source, such as an unmaintained swimming pool, residents are encouraged to report it so proper measures can be implemented by the District. Residents are highly encouraged to take the following precautions and protective measures.

Protect yourself from Mosquito Bites:

1) Use Insect Repellent- Use a repellent with DEET, picaridin or oil of lemon eucalyptus according to the instructions on the product label. Please follow the product label whenever the product is to be applied to children. Lemon eucalyptus oil should not be used on children under three years of age.

2) Dawn and Dusk- Dawn and dusk are peak biting times for many mosquitoes. Consider rescheduling outdoor activities to avoid that time.

3) Clothing- Wearing long sleeves, long pants and socks when outdoors can reduce exposure to mosquito bites.

Mosquito proof your home

4) Drain or dump standing water- Mosquitoes lay their eggs in standing water; therefore, eliminate any standing water on your property. Check rain gutters and drains. Empty SINCE 1959 unused flowerpots and wading pools. Change water in bird baths and pet bowls at least once a week.

5) Screens- Keep mosquitoes outside by having tight fitting screens on all your windows and doors.

As of October 18, 2019, West Nile virus has been found in 33 counties in California, with 3,262 mosquito samples testing positive for the virus and 158 confirmed human cases in the state and 10 in Riverside county. The Northwest Mosquito and Vector Control District has had 5 WNV positive mosquito samples. Please contact the District at (951) 340-9792 to report mosquito problems, request mosquito inspections, report dead birds, request mosquito fish, report neglected pools or standing water where mosquitoes breed. Visit us online at to obtain more information and submit service requests. For the latest statewide statistics for WNV activity, please visit


Eric Ballejos

Northwest Mosquito and Vector Control District

Public Information and Technology Officer