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2014.06.24-Fogging to Suppress West Nile Virus Mosquitoes in Areas of Sunnyvale, Los Altos, and Mountain View

Published on: 8/11/2016 12:03 PM

Ground fogging operations to suppress WNV-carrying adult mosquitoes in the 94024, 94087, 94040 ZIP code areas of the cities of Sunnyvale, Los Altos, and Mountain View were completed at approximately 2:00 a.m. on Wednesday, June 25, 2014.


The SCCVCD confirmed on June 17 that adult mosquitoes collected from the 94024, 94087, 94040 ZIP code areas of the cities of Sunnyvale, Los Altos, and Mountain View tested positive for West Nile virus (WNV).  The detection of mosquitoes infected with WNV has prompted the scheduling of a mosquito fogging treatment in the surrounding area, in an effort to prevent human cases of WNV.  Weather permitting; the ground fogging is scheduled for Tuesday, June 24, 2014, at 11:00 pm, and is planned to last for several hours. The zone is centered at St. Mary Ave. and Fremont Ave.

The fogging area is generally bordered by Lynn Way, Cambridge Ave., Brookline Dr., and Hyde Park Dr. on the north; Tilton Dr. and Yukon Dr. on the east; West Homestead Rd. on the south; and Alford Ave., Park Hills Ave., and Wessex Ave. on the west.  A live map can be viewed at

Information packets will be distributed in the fogging area beginning on Friday, June 20, notifying residents about the fogging operation.  As an added convenience, on Monday, June 23 and Tuesday, June 24, staff from the SCCVCD will be available during extended hours from 7:30 am to 7 pm via a dedicated phone line/voicemail (800-314-2427) to answer questions and provide information.

Post-fogging mosquito samples will be set on Wednesday, and collected on Thursday, June 26. If virus is found in the post-treatment samples, additional fogging may be required. If no virus is found, further fogging will not be needed.  

Contact the Vector Control District if you are being bothered by mosquitoes or know of a potential mosquito-breeding source by calling (408) 918-4770 or requesting a service here.   

Product Used by the SCCVCD in Ground Fogging