Navigate Up
Vector Control District
Menu +
Vector Control’s Mission is to detect and minimize vector-borne diseases, to abate mosquitoes, and to assist the public in resolving problems with rodents, wildlife, and insects of medical significance.


What’s a vector?

A vector can be a mosquito, a rat, a flea, a tick, any animal or insect that can transmit disease or cause harm to humans.

What exactly is Vector Control?

The Santa Clara County Vector Control District is a County public health program that controls and monitors disease-carrying insects such as mosquitoes and ticks, and other harmful pests such as yellow jackets and rats. Primary services include:

  • Detection of the presence/prevalence of vector borne disease through planned tests, surveys, and sampling

  • Inspection and treatment of known mosquito and rodent sources

  • Response to customer initiated service requests for identification, advisory, and/or control measures for mosquitoes, rodents, wildlife, and miscellaneous invertebrates (ticks, yellow jackets, cockroaches, fleas, etc.)

  • Promotion of public awareness through outreach and educational services


Our programs and services are provided free of charge to all residents of the Santa Clara County.

  • Mosquito Inspection and Control

  • Free delivery of mosquito fish

  • Inspection & Advice for Rats and Mice

  • Insect Identification

  • Wildlife Advice and Inspection

  • Community Education

Latest News & Updates


2016.09.29-Fogging to Suppress WNV-Carrying Mosquitoes in San Jose scheduled for September 29

Adult mosquitoes collected from an area including portions of the 95112, 95131 and 95133 ZIP code areas of the city of San Jose have 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 surrouding areas in an effort to prevent human cases of WNV.  Weather permitting, the ground fogging operations are scheduled for 11 p.m. on Thursday, September 29, and will conclude a few hours later. A map of the area can be seen at


Report Day Biting Mosquitoes!

Aedes aegypti (Yellow Fever mosquito) and Aedes albopictus (Asian tiger mosquito) have been introduced into the Bay Area historically, but are not currently found in Santa Clara County.  Both species have the potential to transmit Yellow Fever, Dengue, Zika, and Chikungunya to people in places where these viruses and the mosquitoes occur. 

Help us keep these day biting, black and white mosquitoes from invading the County. Report any suspicious mosquitoes and learn more by visiting our daytime biting mosquito page.  

Responses Related to the SCCVCD Programmatic Environmental Evaluation Report

The Santa Clara County Vector Control District has produced the following report with the responses to the comments received during the open period for the public evaluation of its Draft Programmatic Environmental Evaluation Report (PEER).

SCCVCD PEER Comments_Responses.pdf