California Valley Fever: Symptoms & Prevention
- California is bracing for a potential record-breaking year for valley fever cases, driven by prolonged dry conditions, according to public health officials.From January to April, the state Department...
- Valley fever, also known as coccidioidomycosis, is a lung infection caused by inhaling spores of the coccidioides fungus, which thrives in dry soil, according to the Centers for...
- Last year, a music festival in Kern County became a valley fever hot spot after 19 attendees contracted the disease, experiencing severe symptoms such as pneumonia-like conditions, rashes,...
California is facing a potential surge in valley fever cases, a concerning trend driven by dry conditions. Public health officials are reporting a significant increase in cases compared to previous years, emphasizing the importance of understanding this fungal infection. Contracted by inhaling fungal spores in dry soil, valley fever can cause pneumonia-like conditions. Protect yourself by wearing masks in dusty environments and staying indoors during windy days, proactive measures highlighted by News Directory 3 experts. The disease is often misdiagnosed, so be aware of symptoms such as cough, fever, and chest pains. The CDC recommends further precautions for those in high-risk areas. Discover what’s next in the fight against this growing health concern.
California Valley Fever Cases Expected to spike: Prevention tips
Updated May 31, 2025
California is bracing for a potential record-breaking year for valley fever cases, driven by prolonged dry conditions, according to public health officials.From January to April, the state Department of Public Health reported over 4,000 cases statewide. This marks a significant increase compared to the same period in 2024 and 2023.
Valley fever, also known as coccidioidomycosis, is a lung infection caused by inhaling spores of the coccidioides fungus, which thrives in dry soil, according to the Centers for Disease Control and prevention. These spores become airborne when the soil is disturbed by wind, construction, or other activities. The fungus is prevalent in the southwestern U.S., parts of Mexico, and Central and South America.
Last year, a music festival in Kern County became a valley fever hot spot after 19 attendees contracted the disease, experiencing severe symptoms such as pneumonia-like conditions, rashes, headaches, and exhaustion.
While valley fever cases typically rise in late summer and decline in winter, state officials note that the transmission season is starting earlier and lasting longer. UC Berkeley researchers suggest that climate change,with its drier spring and fall seasons and heavier winter rains,may be extending the high-risk exposure periods for valley fever.
The disease is often misdiagnosed because its symptoms—cough, fever, and chest pains—resemble those of other infectious diseases. This can complicate accurate reporting of case numbers. while current trends suggest a new record for valley fever, officials say it’s too early to confirm.
Protecting Yourself from Valley Fever
Fresno County public health officials offer these tips for hikers, especially those on trails like the John Muir Trail:
- Stay on marked trails and avoid activities that stir up dust.
- Consider wearing a properly fitted N95 mask in dusty conditions.
- Avoid hiking on windy days or after disturbances that increase dust.
- clean skin wounds thoroughly with soap and water, especially after soil exposure.
The CDC recommends these precautions for those living, working, or traveling in areas where the fungus grows:
- Stay indoors when it’s windy and dusty.
- Keep windows and doors closed on windy days.
- Use recirculating air in vehicles when driving through dusty areas.
- Wet down soil before digging to prevent dust.
- Consider wearing an N95 mask when outdoors in dusty conditions.
Who is at Risk?
According to the Los Angeles County Department of Public Health,individuals who spend significant time outdoors and are exposed to dirt and dust are at higher risk. this includes construction workers,farmers,military personnel,and archaeologists.Those living or working near dry, dusty areas are also at risk.
Other high-risk groups include:
- Adults 60 and older.
- People with diabetes or conditions weakening the immune system.
- Pregnant women, especially in later stages.
- Children 5 and younger.
- Individuals of Black, Latino, Native American, or Filipino descent.
Symptoms and Diagnosis
Valley fever primarily affects the lungs, causing symptoms like cough, fever, chest pain, fatigue, difficulty breathing, muscle or joint pain, night sweats, weight loss, or rash. Symptoms typically appear one to three weeks after exposure and can last a month or longer.
While some experience mild symptoms that resolve without treatment, others require medical intervention. In severe cases, the infection can spread beyond the lungs. Diagnosis is usually confirmed with a blood test.
Public health officials advise consulting a doctor if you test negative for COVID-19 but have respiratory symptoms lasting over a week,especially if you live in or have recently visited an area where valley fever is common. Treatment, frequently enough involving antifungal medications, depends on the severity of the disease.
What’s next
Public health departments will continue monitoring valley fever trends and providing updated guidance as the summer progresses. residents and visitors are encouraged to stay informed and take necessary precautions to minimize thier risk of infection.