West Nile Virus Risk Rising as Mosquito Season Peaks

Southern California heads into mosquito peak with early West Nile warning signs

Even though mosquitoes are now a year-round problem in Southern California, this is the time of year when bites — and the public health risks tied to them — typically rise, as West Nile activity increases and officials track an invasive species that can spread dengue, Zika, and yellow fever. What's happening? Southern California is heading into that stretch with early warning signs already appearing. As LAist reported, federal public health offi…

Are mosquitoes and ticks in the Northwest dangerous? Usually not, but many Washington counties don't monitor risk

Last year, a Tacoma woman may have been the first person to contract malaria from within the state of Washington.

Third mosquito trap sample in San Marcos tests positive for West Nile Virus

A third mosquito trap sample collected in San Marcos on July 17 has tested positive for West Nile Virus, according to a press release from Hays County.

West Nile virus risk rising as mosquito season peaks

MONTANA —- Mosquitoes are out in full force across Montana this summer, and health officials are keeping a close eye on the potential spread of West Nile virus as the season progresses.

West Nile virus in Hays County: Third mosquito trap tests positive

A third mosquito trap has tested positive for West Nile virus in Hays County.

First West Nile virus-positive mosquitoes detected in Shasta County this year

Two mosquito samples collected in southeast Anderson tested positive for West Nile virus, marking the first detection of the virus in Shasta County during the 2026 mosquito season.