What Is Valley Fever?
2. What Causes Valley Fever?
There are two strains of coccidioides fungi that lead to valley fever. These fungi are most commonly found in the southwest United States, particularly in Arizona and southern California, although it’s possible that they can thrive anywhere in the western United States. They are also prevalent in Mexico and Central America.
People catch valley fever by inhaling coccidioides spores. These spores live in the soil and are stirred up and made airborne by activities such as farming or construction. The illness is not communicable from person to person.
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