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Vector Control District
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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

2014.08.28 - Fogging to Suppress West Nile Virus Mosquitoes in Areas of Santa Clara and San Jose -A map of the fogging zone can be seen here

2014.08.26 - Fogging to Suppress West Nile Virus Mosquitoes in Areas of San Jose -A map of the fogging zone can be seen here

2014.08.15-The SCCPHD has reported that five residents of county areas with high WNV activity ( ) have been infected with WNV. See the full announcement here.


2014.08.19 - Fogging to Suppress West Nile Virus Mosquitoes in Areas of Sunnyvale and Mountain View -A map of the fogging zone can be seen here


Up-to-Date WNV Activity and Fogging Operations in Santa Clara County

Click for a Large View Map