September 29th, 2020

Contact:  Luz Maria Robles, Public Information Officer
Office:  916.405.2082 | Cell:  916.416.6337
E-mail:  [email protected]
–Second detection of Aedes aegypti in Yolo County
Elk Grove, Ca.– The Sacramento-Yolo Mosquito and Vector Control District announced today that it has detected the invasive mosquito Aedes aegypti in a new area of Yolo County. An adult female mosquito was found in a trap at Pioneer Park near El Macero in Davis. This is the first time invasive mosquitoes have been detected in Davis, however on September 15th  the same species of mosquito was also found in Winters.  The most recent discovery was made by a lab technician conducting routine West Nile virus surveillance in the area.  “Upon the finding of invasive mosquitoes in Winters this season, we knew the potential for detecting them in other areas was very likely,” said Gary Goodman, District Manager. “We are mobilizing staff and District resources to look for additional areas where mosquitoes might be breeding and limit their expansion,” added Goodman.
For the past two weeks, field technicians have been conducting door to door inspections in Winters looking for potential mosquito breeding sources, talking to residents about ways they can help eliminate mosquitoes on their property and conducting appropriate treatments as necessary.  “Unfortunately, the infestation of invasive mosquitoes in Winters is very widespread,” added Goodman.  “We will continue working diligently and putting our best effort forward to reduce mosquitoes and protect all residents,” said Goodman.
The public plays a critical role in helping to control the spread of this mosquito. Aedes aegypti are small, dark mosquitoes that lay eggs above water in small containers such as flower pots, pet dishes, bird baths, tin cans, tires and other containers as small as a bottle cap that are commonly found in backyards. All residents are urged to inspect their yards daily and drain all sources of stagnant water.
The Aedes aegypti mosquito is not native to California; it is an aggressive mosquito that prefers to bite people during the day and has the potential to transmit deadly viruses including Zika, dengue fever and chikungunya. These mosquitoes are now permanently established throughout the state and were also recently found for the first time in Sutter and Shasta counties. Neighboring San Joaquin County had initially detected these mosquitoes last year and found them again this past July.  
Residents experiencing mosquito bites during the day should report them immediately by calling 1-800-429-1022 or requesting service at 
For additional information regarding invasive Aedes aegypti mosquitoes visit the
California Department of Public Health

Practice the District D’s of Mosquito Prevention: 
DRAIN standing water that may produce mosquitoes. 
DAWN and DUSK are times to avoid being outdoors.   
DRESS appropriately be wearing long sleeves and pants when outside. 
DEFEND yourself by using an effective insect repellent.  Make sure to follow label directions! 
DOOR and window screens should be in good working condition.
DISTRICT personnel are also available to address any mosquito problems. Call them at 1-800-429-1022 or visit