Monday, July 25, 2016

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Centers for Disease Control and Prevention (CDC)

CDC Zika Virus Information Page and News Releases

California Department of Health Services (CDPH)

CDPH Zika Virus Information Page

CDPH News Release Page

World Health Organization (WHO)

WHO Zika Virus Information Page

WHO News Release Page

The Facts


  • Zika virus is transmitted by Yellow Fever and Asian Tiger mosquitoes.
  • Both species are now found in Orange County.
  • No Zika virus infected invasive mosquitoes have been found in the United States.
  • Invasive mosquitoes must acquire the virus from an infected human. Example: Infected traveler returning from an area with active transmission of Zika.
  • A strong correlation has been made to microcephaly (small head size) and other congenital birth defects, but no definitive medical causation has been determined.
  • The California Department of Public Health acknowledges that the risk of transmission of Zika virus in California is low. Factors contributing to our lowered risk are the use of window screens, air conditioning, and comprehensive mosquito control and education programs.
  • There is no cure for Zika. Mosquito breeding source elimination and bite prevention is the only way to prevent the spread of this virus.
  • Even in the presence of colder winter temperatures, the District continues to find new invasive mosquito breeding.
  • The formula is simple: no invasive mosquitoes = no Zika virus transmission.
  • Mosquito control is a shared responsibility. Every resident must redouble their efforts to eliminate ALL standing water from their property, including standing water found indoors.

Known Aedes Infestation Areas

Plug in your address the search bar on the top right corner of the map.

If your address falls under a red shaded area, door-to-door surveillance has been conducted and Infestations for invasive mosquitoes (Aedes aegypti) have been dectected.

If your address falls under a yellow shaded area, door-to-door surveillance has been conducted and infestations for invasive mosquitoes (Aedes albopictus) have been detected.

If your address is not shaded, surveys have not been performed in your area. Remain vigilant in making sure you have no standing water both indoors and outdoors. Discard containers, cans, buckets, and tires around the home.

What are the Invasive Mosquitoes in Orange County?

The two invasive mosquitoes in Orange County are the Asian tiger mosquito (Aedes albopictus), and
the yellow fever mosquito (Aedes aegypti).

Asian tiger mosquito Yellow fever mosquito
Aedes albopictus Aedes aegypti

These mosquitoes adapt very well to urban environments (cities). Once introduced, they can thrive in our neighborhoods. While the Orange County Mosquito and Vector Control District is working hard to fight these invasive insects, we can’t do it alone.
We need your help.

Aedes mosquitoes confirmed in OCMVCD

Los Alamitos
Costa Mesa
Mission Viejo
Garden Grove
Huntington Beach
Santa Ana
Lake Forest

See latest map of Invasive mosquito activitiy here!

How to Find Them Around the Yard and Inside Your Home or Office

These mosquitoes can live and complete their life cycle either indoors or outdoors. Eggs are laid along the waterline of any water-holding container such as flower vases, plant saucers, buckets, used tires, and even plants that hold water like bamboo or bromeliads. Eggs can remain alive for years, and hatch into larvae when conditions are right.

Look for:

  • small, black mosquitoes with white stripes
  • mosquitoes active and biting during the day — even indoors!
  • immature mosquitoes (larvae and pupae) swimming in stagnant water.

Mosquito Life Cycle

The invasive, black-and-white mosquitoes can lay their eggs individually along the waterline of any container. This reduces the effectiveness of “dump and drain!”

How to Protect your Family and Community

  • Report black-and-white, daytime-biting mosquitoes to 714.971.2421 or 949.654.2421. You can also submit an online service request.

This FREE service includes inspection and treatment.

  • Remove or drill holes in the bottom of all plant pots, saucers, barrels, bins, and old tires.
  • Do not keep water in buckets or root plant cuttings in water. Sharing plant cuttings can spread mosquito eggs.
  • Cover trashcans, toys and recycle bins, and keep unneeded items out of the rain.
  • Ensure rain barrels are properly sealed. Thousands of eggs can be laid inside rain barrels.
  • Wear insect repellent containing DEET, Picaridin, IR 3535, or oil of lemon eucalyptus.



District Office
13001 Garden Grove Blvd.
Garden Grove, CA 92843
Phone: (714) 971-2421 or (949) 654-2421
Fax: (714) 971-3940
Request Service: Click Here
General Inquiry:


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Orange County Mosquito and Vector Control District · 13001 Garden Grove Boulevard · Garden Grove, CA 92843
(714) 971-2421 or (949) 654-2421 · Hours: M-TH: 7:00 AM - 4:30 PM; F: 7:00 AM - 3:30 PM

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