May 27, 2014 > West Nile virus detected in Santa Clara County
West Nile virus detected in Santa Clara County
Adult mosquitoes detected from San Jose and Campbell areas tested positive for West Nile virus as verified by the Santa Clara County Vector Control District on Friday, May 16. As stated in a press release, acting District Manager Russ Parman said, ÒThis is the first indication of [West Nile virus] infected mosquitoes in Santa Clara County this year, and the earliest detection ever, beating the prior 2008 record by 13 days.Ó
As a result, the county scheduled a fogging treatment on Thursday, May 22, to prevent its spread.
The treatment, ultra-low volume fogging using 1.5 ounces of liquid per acre, occurred from 11 p.m. until about 2 a.m. the next day. Microscopic droplets have high enough doses to kill mosquitoes when they stick.
West Nile virus is transmitted by mosquito bites, and may cause mild to severe flu-like symptoms such as fever, headache, body aches and, in severe cases, significant neurological damage or death. The first detection in California occurred in 2003, with 4,004 people contracting the disease and causing death to 145. Those who are highly susceptible are the elderly and those with compromised immune systems. The virus may be spread from an infected mosquito to a bird which travels or migrates. The bird then is bitten by an uninfected mosquito passing the virus further. Infected mosquitoes may also transmit the virus to other hosts such as animals and, unfortunately, humans.
As of now, according to Bruce Kirkpatrick, district entomologist for the Alameda County Mosquito Abatement District, no trace of the virus has been detected in Alameda County. Kirkpatrick adds that for prevention, the district focuses its control efforts on bird and adult mosquito surveillance.
Santa Clara County encourages residents to take precautions such as draining or dumping standing water weekly, limiting outdoor activities during dusk and dawn, and applying insect repellents.
Visit www.sccvector.org for more information regarding fogging zone and the latest alerts about West Nile virus activity in Santa Clara County. Residents of Alameda County may contact the Mosquito Abatement District by calling (510) 783-7744. They are located in 23187 Connecticut St. in Hayward.