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- Butte County reported its first West Nile virus death this year amid six infections.
- California has confirmed 18 human West Nile virus infections and three deaths statewide.
- Nationwide, 181 West Nile virus cases were reported across 30 states by the CDC.
Public health officials announced on Thursday the first West Nile virus death this year in Butte County, which has had six people infected from the mosquito-borne disease in 2026.
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The person who died from complications related to West Nile virus illness was between 80 and 90 years old, according to a news release from the Butte County Department of Public Health. Butte County officials did not release any further details about the person who died.
There have been 18 West Nile virus human infections and three deaths confirmed in California across 12 counties this year, according to Butte County health officials. The two other West Nile Virus deaths were reported earlier this year in Glenn and Kings counties.
West Nile virus is transmitted to humans and animals through a mosquito bite. Mosquitoes become infected when they feed on infected birds.
Earlier this week, Yolo County reported its first human case of West Nile virus this year. The Woodland resident who tested positive was hospitalized.
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Nationwide, 181 cases had been reported across 30 states as of Tuesday, according to the U.S. Centers for Disease Control and Prevention.
Health officials said symptoms usually develop within a week of being bit by an infected mosquito.
West Nile virus symptoms may include fever, nausea, headaches, and muscle aches, lasting from a few days to several weeks. While most people infected have no symptoms, severe complications such as meningitis, encephalitis, paralysis or even death can occur, particularly in those older than 60 years old or with compromised immune systems.
Adults older than 50 and people with certain health conditions, such as diabetes or high blood pressure, are at higher risk of severe illness.
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Authorities offered these tips to reduce mosquito exposure:
- Drain any stagnant water to eliminate mosquito breeding sites.
- Dawn and dusk, when mosquitoes are most active, are times to limit outdoor activities.
- Dress in long sleeves and pants when outdoors.
- Defend against mosquitoes by using effective insect repellents containing DEET, Picaridin, or Oil of Lemon Eucalyptus.