Sacramento-Yolo Mosquito & Vector Control District

09/12/2026

If mosquitoes could make a wish list, it might look something like this. 😂
Unfortunately for them, we know better. Use insect repellent, eliminate standing water and take steps to keep mosquitoes outside where they belong.

Don’t give mosquitoes what they want!

Graphic courtesy of the Illinois Department of Public Health.

09/11/2026

West Nile virus activity continues in our region.

West Nile virus is spread to people through the bite of an infected mosquito. While most people who become infected won't develop symptoms, some may experience fever, headache, body aches and other symptoms, and a small number can develop serious illness.

Learn more about West Nile virus, symptoms and ways to protect yourself- https://www.fightthebite.net/education/west-nile-virus/

09/10/2026

For the first time, invasive Aedes aegypti mosquitoes have been found breeding in homes in the United Kingdom.

The recent discovery in east London is a new development for the UK and highlights how invasive mosquito species can spread and establish themselves in new areas.

Here at home, Aedes aegypti are already established in parts of Sacramento and Yolo counties. Their continued spread is why surveillance, mosquito control and eliminating small sources of standing water are so important.

Read more-

Climate crisis could increase incursions of Aedes aegypti, which can transmit Zika virus and dengue, experts say

09/09/2026

Got horses? 🐴 Don’t forget about West Nile virus prevention.

Horses are vulnerable to West Nile virus, but vaccination can help protect them. Talk with your veterinarian about keeping vaccinations up to date, and reduce standing water around barns, troughs and other areas where mosquitoes can breed.

Learn more at FIGHTtheBITE.net

09/08/2026

Come along for a day in the field with our team!

Our field technicians inspect mosquito sources, monitor activity and work throughout Sacramento and Yolo counties to help protect public health.

Learn more about what we do at FIGHTtheBITE.net

09/06/2026

Heading outside this Labor Day weekend? Don’t forget the mosquito repellent. 🦟

Mosquito activity and the risk of West Nile virus continues throughout Sacramento and Yolo counties, with mosquito samples and dead birds still testing positive for the virus.

As you enjoy the long weekend, protect yourself from mosquito bites by using an EPA-registered insect repellent and eliminating standing water around your home.

Learn more- https://bit.ly/LaborDayWeekend2026

09/06/2026

A little behind-the-scenes look at the making of a SYMVCD commercial! 🎬

Earlier this season, our team spent some time in front of the camera helping share an important message about mosquito prevention and protecting our communities.

Enjoy a few moments from the shoot!

09/05/2026

See a dead bird? Report it.
Dead bird reports help track West Nile virus activity in our communities.
Learn more and report a dead bird- westnile.ca.gov/report

09/04/2026

An invasive mosquito is creating new challenges for malaria control in Africa.

Anopheles stephensi thrives in urban areas and can breed in small, man-made containers that hold water, allowing it to spread in places where malaria has historically been less common.

Its spread is another example of why invasive mosquitoes are such an important public health concern and why mosquito surveillance and control matter.

Read more-

The malaria-carrying mosquito is resistant to all insecticides. Scientists are scrambling to find ways to blunt the risk.

09/03/2026

Mosquito bites in the middle of the day? It could be an invasive Aedes mosquito.

Unlike many mosquitoes that are most active around dawn and dusk, invasive Aedes mosquitoes are aggressive daytime biters. That means mosquito protection is important during daytime activities too.

If you're spending time outside, use an EPA-registered insect repellent containing DEET, picaridin, IR3535 or oil of lemon eucalyptus, and be sure to follow the label directions.

Invasive Aedes mosquitoes are difficult to control once established, so protecting yourself from bites is an important part of living with these mosquitoes in our area.

Learn more- bit.ly/invasivemosquitoes