Los Angeles County West Vector & Vector-Borne Disease Control District

 

Invasive Aedes Mosquitoes

 

Current Status

  There are three invasive Aedes species in Los Angeles County:

1. Asian tiger mosquito (Aedes albopictus)

2. Yellow fever mosquito (Aedes aegypti)

3. Australian backyard mosquito (Aedes notoscriptus)

  To date, there have been no confirmed reports of Aedes mosquitoes carrying Zika, yellow fever, dengue fever or chikugunya in Los Angeles County.

 

Visit California Department of Public Health Zika Information for the latest information on Invasive Aedes mosquitoes in California.

 

 

Characteristics

 Small mosquitoes with black and white stripes

 

 Aggressive daytime biter (can also bite at night). Most established mosquitoes in the area bite primarily at dawn and dusk.

 Breeds indoors and outdoors primarily in plant saucers and other water filled containers

 

 

 Eggs are laid above the water line in containers with as little as a teaspoon of water. The eggs can survive dry conditions up to two (2) years and develop when water fills the container.

 

 

Invasive Aedes Breeding Sources

 Flower pots and vases

 Plants that can hold water (bamboo or bromeliads)

 Plant saucers

 Buckets

 Clogged rain gutters

 Rain barrels

 Old tires

 Ponds

 Birdbaths

 Fountains

 Tree holes

 Tin cans

 

 

Diseases Transmitted by Invasive Aedes Mosquitoes

 Zika virus

 Dengue fever

 Yellow fever

 Chikungunya

These diseases normally occur in tropical and sub-tropical areas of the world, including Mexico, Central and S. America, Southeast Asia, and Africa. Aedes mosquitoes become infected when they bite a person already infected with the virus. Infected mosquitoes can then spread the virus to other people through bites. Currently, Los Angeles County is listed by the CDC as an area with no known risk of Zika infections (http://wwwnc.cdc.gov/travel/page/world-map-areas-with-zika).

 

 

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