Reported cases of coccidioidomycosis — commonly referred to as valley fever — increased more than fivefold in Missouri from 2004 to 2013, according to research published in MMWR.

Researchers at the Missouri Department of Health and Senior Services retrospectively examined coccidioidomycosis surveillance data from 2004 to 2013 in Missouri, a state without endemic coccidioidomycosis. They determined that the incidence of reported cases across the state increased from 0.05 per 100,000 population in 2004 to 0.28 per 100,000 in 2013 (P < .001).