California’s epidemic of vaccine denial, mapped - The Washington Post

California’s epidemic of vaccine denial, mapped - The Washington Post: "My colleague Jason Millman reported last week on the results of a study showing that vaccine skeptics tend to cluster together in like-minded, often wealthy communities. Since the study focused on just a handful of northern California counties, I'd like to extend that analysis by looking at vaccine refusal across the entire state of California -- as a result both of vaccine denial and religious objections.

The map below is a first crack at that. Using data from the California Department of Public Health, it divides the state into equal-area grids, and within each area it counts the number of public school kindergartners with what's known as a "personal belief exemption" (PBE) to state vaccine requirements. The hexagon markers are sized by the total number of kindergartners in the area, and colored according to the percent of them with PBEs."







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