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This dashboard provides an overview of surveillance data for Valley fever (coccidioidomycosis or “cocci”) in California from 2001–2022. For an overview of data inclusion/exclusion criteria for this dashboard, please see the Technical Notes.
Interactive overview of Valley fever cases and rates in California by year, location, and demographic group. Includes data from 2001–2022 Surveillance Reports
The map below shows the rates of reported Valley fever cases by county in California, with darker shaded counties having higher rates than lighter shaded counties. Outside of California, Valley fever occurs in Arizona, and some areas of Nevada, New Mexico, Utah, and Texas, and parts of Mexico and Central and South America.
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Valley fever has been detected in the United States, Mexico, Central America, and South America (Campins, 1970). Between 1percent and 5 percent of people infected with valley fever develop the severe form (disseminated disease), where the fungus spreads from the lungs to the rest of the body (County of Kern Public Health Services Department).
This classic map was created by Valley Fever Survivor based on source material from the U.S. Geological Survey and the following article: Edwards and Palmer. Edwards PQ, Palmer CE. Prevalence of sensitivity to coccidioidin, with special reference to specific and nonspecific reactions to coccidioidin and to histoplasmin.
Nov 1, 2022 · Maps showing Valley fever rates from 2013-2018 (left) and in 2019 (right) Source: CDPH 2020. In California, the incidence of Valley fever has increased almost fivefold from 2001 to 2021. The highest number of new cases was reported in 2019.
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Since the first case of Valley Fever was described in Kern County in 1901, the local health department, healthcare providers, and others have dedicated themselves to studying this disease. Kern County has been a leader and resource for treating and taking care of those infected with this disease.
