West Nile Virus confirmed in agricultural area near Roseville

Placer Mosquito urges residents to use EPA-registered repellent to prevent bites

Roseville, Calif. – The Placer Mosquito and Vector Control District has confirmed the first mosquito sample to test positive for West Nile virus in Placer County this year. The mosquitoes were collected in the rural west Placer County area, west of the city of Roseville in an agricultural area near Phillip Road.

The District conducts weekly mosquito trapping and testing for West Nile virus across Placer County throughout the summer. Test results guide the District's efforts to assess the risk of West Nile virus transmission to people, provide timely public information, and perform targeted mosquito control treatments to protect public health.

Taking protective measures

"With the ongoing warm temperatures this season, we anticipate we will see more West Nile virus activity after this initial detection," stated Joel Buettner, Placer Mosquito District Manager. "We urge residents to take protective measures, including wearing an EPA-registered repellent, to prevent mosquito bites. Our team is actively conducting surveillance and treatments to help reduce the risk of mosquito-borne disease transmission to our community."

West Nile virus is a potentially serious illness transmitted through the bite of an infected female mosquito. There is no cure so prevention is key.

To protect yourself and your family:

  • Use an EPA-registered repellent
  • Dump and drain standing water on your property to prevent mosquito development
  • Report mosquito problems on the District website.

Become a Sustaining Patron

100% voluntary • Cancel anytime • No paywall



Roseville Today remains free for everyone.
Your voluntary monthly support helps us continue serving the community.

Local Impact

Hope Valley

Local Insights

Trending

Hope Valley: California's Autumn Wonderland

Alpine County, Calif. - Draped in hues of golden yellow and pumpkin orange, groves of aspen trees shimmer with the arrival of fall. This is Hope Valley, California — a fall foliage wonderland where October

Woodcreek High School in Roseville Seeks Dress Donations for Formal Wear Event

Woodcreek High School's Wellness Center is seeking formal dress donations for its second annual Formal Wear Event, helping students find outfits for Homecoming regardless of income.

Ain't Necessarily Dead Fest in Auburn: Placer County's Most Colorful & FREE Event this Saturday

Ain't Necessarily Dead Festival returns to Auburn at Regional Park on September 12, 2026 for another legendary day of music, dancing and a cosmically good time in the time-honored tradition of any Deadhead gathering.

Roseville Polish Festival: Annual Celebration Returns September 12, 2026

Roseville, Calif.- The public is invited to attend the Annual Polish Festival in Roseville, California on Saturday, September 12, 2026.

Rattlesnakes in Roseville: Tips to Protect Against Bites as Activity Increases

Roseville, Lincoln, and Rocklin along with all of South Placer is rattlesnake country. They thrive in our warm and wild open spaces as well as taking up residence in neighborhood

Riego Creek Elementary in Roseville

Riego Creek Elementary 3255 Pruett DriveRoseville, Calif. 95747(916) 771-1900Elementary Schoolshttps://riegocreek.rcsdk8.org/ Map...

Royal Oaks Mobile Park in Rocklin

Royal Oaks Mobile Park 4695 Pacific StRocklin, Calif. 95677(916) 624-2127Mobile Home...

Dutch Bros. Coffee on Sunset Blvd in Rocklin

Dutch Bros. Coffee 3450 Sunset Blvd.Rocklin, Calif. 95765Drive thru - Coffee...

5 Star Fingerprinting in Rocklin

Livescan Fingerprinting and Notary Services

The Grand Indian Cuisine in Roseville

The Grand Indian Cuisine is an authentic Indian restaurant located in Roseville, California

Related Articles

Sponsored Local Spotlight

California Fence and Patio serving Placer County for over 30 years

Loomis, Calif. - California Fence & Patio is proud of their reputation as the premier fencing and patio cover contractor in the Roseville,, Sacramento and Placer County region.

Steve Wallen Swim School in Roseville Has Taught Safe Swimming Skills for Over 40 Years

Roseville, Calif. - Steve Wallen Swim School in Roseville teaches swim lessons and water safety for infants, kids, and adults of all skill levels.

Paul Black's Window Cleaning serving Roseville and South Placer County for over 30 years

Paul Black’s Window Cleaning Inc. has been serving Placer County’s commercial and residential window cleaning needs since 1990.