No reports in Rancho Santa Margarita to date; eliminate standing water to reduce mosquito-breeding environments.
Garden Grove, CA. Since the first indications in Orange County of West Nile virus on May 13, 2016, mosquito samples have tested positive in the following cities: Anaheim, Irvine, La Habra, La Palma, Orange, and Seal Beach. These findings indicate a more broad distribution of the virus earlier in the mosquito-breeding season than in the previous two epidemic years. In 2014, the virus was concentrated in the City of Santa Ana, and in 2015, the virus was found predominantly in the cities of Tustin and Orange during this period.