Did fighting California wildfires expose firefighters to Valley Fever?

When you think of the dangers wildland firefighters face, flames and smoke come to mind first. But a new report points to a hidden threat in the dust: Valley Fever. The fungal infection, formally called coccidioidomycosis, was confirmed in an outbreak among crews battling California wildfires in 2021. The fungus lives in soil, and activities that kick up dust—like firefighting—can put people at risk of breathing it in. The report doesn't say how many firefighters got sick, how severe their cases were, or what specific firefighting tasks led to exposure. It also doesn't compare their risk to anyone else's. What it does do is sound an alarm. For the men and women who run toward wildfires, this adds another layer of risk to an already perilous job. The finding is based on field notes from an outbreak investigation, not a detailed clinical study, so many important details are still missing. But it makes one thing clear: when planning for firefighter safety, the air they breathe might need as much attention as the flames they fight.