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Report even just one mosquito

Center of image is a photograph of a mosquito very close up with a abdomen full of bright red blood. Text above the mosquito reads "ONE MOSQUITO IS ONE TOO MANY - Report even just ONE mosquito." The District logo, phone number, and website are along the bottom of the image.

Are mosquitoes biting you in or around your home? Submit a report HERE or call 650-344-8592 to report even just one mosquito.


Why report just one mosquito?

  • If you are noticing mosquitoes, your neighbors might be too, but they might not know to call us for help.  You can help your neighborhood stay mosquito-free by reporting!
  • It only takes one bite, from one infected mosquito, to transmit diseases like West Nile virus. 
  • Although West Nile virus is rarely found in San Mateo County, we aim to proactively keep mosquito populations low so that it is more difficult for West Nile virus to enter our area and become established.
  • We are on the look-out for invasive Aedes aegypti mosquitoes, which are aggressive little mosquitoes that bite during the day. The earlier we can spot these in our County, the more likely we will be able to stop them from establishing in our County. These little mosquitoes are extremely annoying and have the potential to carry several different diseases. Learn more about invasive Aedes aegypti mosquitoes here.
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