US EditionCalifornia valley fever cases hit record highs again in 2025, state reports
California saw a record 12,500 Valley fever cases in 2024, with over 6,700 cases confirmed by July 2025, driven by environmental and construction-related factors, health officials said.
- California has seen a record number of Valley fever cases in 2025, with 6,761 confirmed by the conclusion of July.
- The rise follows a gradual increase over five years, influenced by climate patterns like wet winters and dry summers that promote fungus growth.
- Valley fever is caused by inhaling spores of the Coccidioides fungus found in soil, mainly affecting the Central Valley and San Joaquin Valley regions.
- Experts advise testing for symptoms lasting more than seven to 10 days such as cough, fever, fatigue, and difficulty breathing, especially for those exposed to dusty air.
- If current trends continue, 2025 cases will surpass last year’s record of over 12,500, highlighting the need for ongoing public health precautions and awareness.
15 Articles
15 Articles
Valley fever cases spike to record levels in West Coast state, health officials warn
Cases of Valley fever are spiking in California, according to health officials.As of the end of July, there were 6,761 cases confirmed — which means if this pace continues, the total 2025 numbers will likely exceed the 12,595 cases seen in 2024.Last year’s total was a new record for the state, where the average has been 7,000 to 9,000 cases annually between 2016 and 2024, per data from the California Department of Public Health (CDPH).MOSQUITO-B…
The Columbian
California valley fever cases hit record highs again in 2025, state reports
LOS ANGELES — The latest California numbers suggest 2025 will be another record-smashing year for valley fever, the illness linked to drought and precipitation and spread by fungal spores. Read more...
Valley fever cases rising in California, CDPH warns
SAN FRANCISCO (KRON) -- Officials with the California Department of Public Health (CDPH) are alerting Californians that the risk for catching Valley fever remains high in 2025. Cases usually spike in late summer and fall months. Valley fever, also known as coccidioidomycosis or cocci, is caused by a fungus that grows in soil in some areas of California's Central Valley. The illness is named after the San Joaquin Valley. "Most people who get Vall…
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