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California Remains in Fight against WNV

A total of eight new cases of West Nile Virus (WNV) were reported in California’s August 28, 2020 Arbovirus Surveillance Bulletin, bringing the state’s year-to-date total of confirmed WNV cases to 35. The latest confirmations included the first Butte, Merced, and Sutter county WNV cases of 2020.

Despite the new confirmations, the 35 confirmed cases represents a 39%, year-over-year reduction from the 57 cases confirmed by this time last year. To date, WNV activity has been confirmed in 29 California counties, compared to 26 counties last year.

The most recent report included two additional cases of WNV in Stanislaus County, bringing its total to 16 – nearly half of the state’s 2020 cases. Through 8/28, viral activity was recorded in 266 mosquito pool tests from this County, followed by 189 positives for LA County (5 human cases) and 186 positives for Fresno County (0 human cases).