Riverside University Health System — Public Health officials have reported a significant increase in Valley fever cases in Riverside County. The disease, also known as coccidioidomycosis, is a lung infection caused by inhaling fungal spores commonly found in soil and dust, especially during dry and windy conditions.
According to county data, there were 465 confirmed cases of Valley fever in 2024. So far this year, 322 cases have been reported, marking a 58% increase compared to the same period last year. This rise reflects broader statewide trends linked to changing climate patterns. Interviews conducted by RUHS-PH with 309 individuals diagnosed with Valley fever revealed that 59% had co-existing conditions such as diabetes, and 36% worked outdoors.
“It is important to know about the risk of Valley fever if you work or spend time in dusty environments and have respiratory symptoms that are not getting better after seven to 10 days. Symptoms can look very similar to the flu and other respiratory illnesses,” said Riverside County Public Health Officer Dr. Jennifer Chevinsky.
Symptoms typically develop one to three weeks after exposure and may include fever, cough, chest pain, fatigue, and shortness of breath. While many people recover without treatment, some may experience severe or chronic symptoms requiring medical attention. Adults over age 60 and those with chronic health issues or weakened immune systems face a higher risk for severe illness.
Health officials urge anyone who works or spends time in dusty areas and experiences persistent respiratory symptoms to consult a healthcare provider if they suspect Valley fever.
Dr. Chevinsky recommends several precautions: “Stay indoors, close windows and doors, and use air filtration during dust storms or windy conditions.
Set auto air conditioning on ‘recirculate’ when driving through dusty areas.
Avoid dusty areas, such as construction sites. Consider wearing a face covering if you must be outdoors in these areas.
Avoid gardening or other activities involving contact with soil in windy and dusty conditions. Before digging, wet soil to prevent stirring particles into the air.”
For more information about Valley fever prevention and resources, residents are encouraged to visit Riverside University Health System – Public Health online.
