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Additional West Nile virus test results for birds and mosquitoes have indicated increased West Nile virus activity in a larger area of Roseville and parts of Rocklin. See map below. risk area outlined in red and shaded in pink.

All West Nile virus-positive indicators are currently being evaluated, and aerial and ground-based treatments are being considered. We urge everyone who lives, works, or recreates in the expaded risk area to implement ALL prevention measures, including:

staying indoors during peak mosquito activity times (approximately 5 – 8 AM and 5 – 10 PM)

using an effective insect repellent (containing DEET, picaridin, IR3535 or oil of lemon eucalyptus) if you have to be outside for ANY length of time. For a list of recommended repellents, click here.

making sure mosquitoes cannot gain access into your home by shutting doors and windows and keeping screens in good working order

eliminating standing water around your home and reporting and standing water areas in your neighborhood

We also encourage residents to visit our website regularly during this time of year for tips and updates. www.placermosquito.org