A Central County woman was confirmed last week at the first human victim of the West Nile virus in Contra Costa this year, Contra Costa health officials said Tuesday.
The woman was reportedly only mildly ill and is expected to make a full recovery. Her illness was confirmed by a state lab in Richmond Thursday.
There were three confirmed human cases of West Nile virus in Contra Costa County in 2011, county health officials said, and there have been no fatalities related to West Nile virus in Contra Costa since 2006.
The West Nile virus, contracted through mosquito bites, can cause fever, head and body aches, nausea and vomiting, swollen lymph nodes and skin rash.
Susan Farley, communicable disease controller with Contra Costa Health Services, said people should wear mosquito repellent outdoors, avoid going outside around dawn and dusk and get rid of standing water.