Whooping Cough in California by County

Click on a county to view the number of cases of pertussis reported and rate of incidence for 2010.

The California Department of Public Health included pertussis cases with onset from January 1 through December 31, 2010 as reported to the department by local health jurisdictions.

Darker colors on the map indicate higher rates per capita.

We'll let you know when big things happen.

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