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Infection is caused by inhaling the spores of the fungus Coccidioides immitis. This fungus is often found in desert regions. About 60% of infections cause no symptoms and are only recognized later by a positive coccidioidin skin test.
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When the spores of C. immitis are inhaled, they can become lodged in the lungs, divide, and cause localized inflammation. This is known as acute or primary coccidioidomycosis. The disease is not spread from one person to another. Approximately 60%...
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