San Joaquin County Mosquito & Vector Control District

06/05/2026

🦟 Pop Quiz!

You’re swatting mosquitoes that are trying to bite you. Who’s the culprit?

Cast your vote below!👇

06/04/2026

The San Joaquin County Mosquito & Vector Control District is proud to share its latest annual report with all of you!

In the 2025 Annual Report, we highlight our storied past and illustrate the comprehensive mosquito control measures that we utilize to deliver extensive vector surveillance and control services to enhance the public health and quality of life for the residents of our beloved county.

In this latest edition, we commemorate our District's 80th anniversary, present dashboards and infographics to denote key statistics, showcase our inaugural pilot Sterile Insect Technique program, and in accordance with our mission statement, demonstrate our enhanced field operations utilizing the most advanced technology available.

The new Table of Contents feature will also help better navigate you through all this information which distinctly encompasses the District's operations and administration. We hope you find the report insightful as well as provides you, the reader, with firsthand knowledge on how we strive to continually provide PROTECTION THROUGH PREVENTION to all the residents of San Joaquin County, California.

View the PDF here: https://bit.ly/SJCMVCDAnnualReport2025

06/04/2026

🦟 Today is Insect Repellent Awareness Day!

The best mosquito bite prevention starts with you. When spending time outdoors, use an EPA-registered insect repellent containing DEET, picaridin, IR3535, oil of lemon eucalyptus or PMD to help protect yourself from mosquito bites.

No tricks, no gimmicks—just proven protection. ✔️

Pass the repellent, please! 🚫🦟

06/02/2026

Congratulations to SJCERA on 80 years of serving public employees and this well-deserved recognition!

The San Joaquin County Mosquito & Vector Control District is proud to participate in SJCERA and grateful for the work they do to support public employees throughout our county. We are especially proud of our own Administrative Assistant/Bookkeeper, Emily Nicholas, for her service on the Board of Retirement representing General Members.

Congratulations on this milestone anniversary!

Celebrating 80 years of dedicated service! 🎉 We are honored that SJCERA’s 80th Anniversary was recognized by the San Joaquin County Board of Supervisors, marking eight decades of commitment to serving the retirement security of public employees and retirees from our ten employers.

Of course, we dedicate this moment to our incredible members - retirees, deferred, and active alike - for trusting us in being the best version of ourselves. While 80 years have passed, our purpose remains the same: to provide a secure retirement.

Here's to continuing our mission for generations to come!

06/01/2026

Every year, San Joaquin County Mosquito & Vector Control District staff inspect and treat more than 20,000 catch basins throughout San Joaquin County to help prevent mosquitoes before they become a problem in our neighborhoods.

But mosquito control doesn't stop there. Residents play an important role, too. Take a few minutes this week to walk your yard, spot hidden standing water, and dump it out.

While we treat mosquito sources throughout the county, you can help by eliminating mosquito sources around your home.

Together, we can reduce mosquitoes in our community.

Spot the source. Stop the swarm!

05/29/2026

🦟🔬 Advancing Mosquito Control Through Research and Collaboration

At San Joaquin County Mosquito & Vector Control District, our work is guided by science. Our District entomologists and laboratory staff conduct mosquito surveillance, species identification, and disease testing to help protect public health and guide mosquito control efforts throughout the county.

We're also proud to partner with University of the Pacific on research that helps answer important questions about mosquitoes in our community. One ongoing project, presented preliminarily at the 2025 Mosquito and Vector Control Association of California Annual Conference and receiving 2nd place in the William E. Walton Poster Session, is investigating host preferences through bloodmeal analyses of the invasive 𝘈𝘦𝘥𝘦𝘴 𝘢𝘦𝘨𝘺𝘱𝘵𝘪 mosquito compared to our indigenous 𝘈𝘦𝘥𝘦𝘴 mosquito species in San Joaquin County. Preliminary bloodmeal analyses found that a majority of invasive 𝘈𝘦𝘥𝘦𝘴 𝘢𝘦𝘨𝘺𝘱𝘵𝘪 blood meals were derived from humans with a smaller percentage from dogs or cats, while blood meals from indigenous 𝘈𝘦𝘥𝘦𝘴 species were primarily from livestock or small mammals.

This research project is being led by Pacific graduate student Lemya Mohamed under the mentorship of Dr. Tara Thiemann, Professor of Biological Sciences and Co-Chair of the Department of Biological Sciences, in collaboration with our District entomologist, Dr. Huang, and laboratory staff.

By combining field surveillance, laboratory science, and academic research, we're working to better understand mosquito behavior, assess public health risks, and develop effective solutions for our community. We look forward to following this research as it progresses and sharing future publications and findings.

05/26/2026

The San Joaquin County Mosquito & Vector Control District remembers the life and legacy of former District Manager and Board Trustee, Jack V. Fiori, who passed away on May 15, 2026, at the age of 95.

Mr. Fiori dedicated more than 60 years of service to mosquito and vector control in San Joaquin County. He joined the District in 1955, serving 36 years as an employee, including 15 years as District Manager. After retirement, he served an additional 25 years on the Board of Trustees representing the City of Lodi, including two terms as Board President.

His decades of dedication, leadership, and commitment to public service left a lasting impact on the District and the community we serve. We extend our sincere condolences to Mr. Fiori’s family and loved ones.