What Causes Coccidioidomycosis Valley Fever?
Coccidioidomycosis (also known as San Joaquin Fever, or simply Valley Fever) is an infection caused by a dimorphic fungus called Coccidioides immitis. Once the spores of this fungus (arthroconidia) are inhaled and get deposited in the lungs, they produce spherules, resulting in the onset of Coccidioidomycosis.