The Santa Clara County Vector Control District said the insects were collected in the area of zip code 95035.
The district has since scheduled soil treatment at 11 p.m. Thursday. The treated area is bordered by Dixon Landing Road to the north, Milpitas Boulevard and Abel Street to the east, Highway 237 and Bellew Drive to the south, and McCarthy Boulevard to the west.
Although residents do not need to move during the generally three-hour treatment, they can minimize their exposure by closing windows and staying indoors, depending on the neighborhood.
The district said that West Nile virus has infected 7,024 people and killed 309 people since arriving in California in 2003. In 2015, a record 53 people died from the disease.
An infection does not cause symptoms in most people, but for some people it can cause fever, headache, body aches and, in severe cases, severe neurological damage or death. Adults over the age of 50 and those with certain chronic conditions such as diabetes, high blood pressure, kidney disease and cancer are most at risk for serious complications.
Residents can help prevent the spread of the virus by draining or pouring standing water and limiting outdoor activity at dusk and dawn when mosquitoes are most active.
District employees are available to answer all questions from the public, Monday to Friday, 408-282-3114, 7:30 a.m. to 4:30 p.m. Questions can also be sent to [email protected]