Newsletter

Understanding and Managing Employee Exposure to Valley Fever

According to data provided by the California Department of Public Health (CDPH), cases of a respiratory condition known as Valley Fever are on the rise in California. Authority members should be aware of potential employee exposure.

Valley Fever is a respiratory condition caused by a microscopic fungus known as Coccidioides immitis. This fungus inhabits the top two to twelve inches of soil in many parts of the state, with the highest rates of exposure occurring in the Central Valley and the Central Coast. When contaminated soil is disturbed by activities such as digging, grading, vehicle operations on dirt roads, or high winds, fungal spores can become airborne and potentially be inhaled by workers. Many people who are exposed never have symptoms, while others experience flu-like symptoms (fever, headaches, aches in upper body and legs) that usually go away on their own after a few weeks. If symptoms last more than a week, medical attention should be sought.

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Exposure to Valley Fever can be managed and prevented through a formal Respiratory Protection Program, in conjunction with taking the following steps to reduce worker exposure in areas with high incidence rates:

1. Minimize the area of soil disturbed.
2. Use water, appropriate soil stabilizers, and/or re-vegetation to reduce airborne dust.
3. Stabilize all spoils piles by tarping or other methods.
4. Clean tools, equipment, and vehicles before transporting offsite.
5. Provide air-conditioned cabs for vehicles that generate heavy dust and make sure workers keep windows and vents closed.
6. Suspend work during heavy winds.
7. If workers’ clothing is likely to be heavily contaminated with dust, provide coveralls and changing rooms, and showers where possible.

Encourage workers to report Valley Fever symptoms promptly to a supervisor and to follow agency procedures for reporting a work-related injury.

Additional information on Valley Fever is offered through the California JPIA’s Respiratory Protection training program. To schedule a session or for more information, contact our training department. Additional resources can be found from the Centers for Disease Control and Prevention (CDC).

For more information, contact your regional risk manager.

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