Dictionary of Human Evolution and Biology

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Respiratory infection caused by spores of a unicellular fungus, Coccidioides immitis. Of New World pre-Columbian origin, now distributed throughout the southwestern USA and Central and South America. Symptoms include a persistent fever, and possibly a dry cough, sore throat, headache, and an itchy rash. The pulmonary form usually heals spontaneously in a few weeks; rarely, it progresses to a disseminated form that produces abscesses throughout the body and carries a mortality of up to 60%. Aka valley fever, San Joaquin Valley fever.

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