University of Wisconsin–Madison

Category: Education

Vaccine opt-outs dropped — barely — when California added more hurdles

New research out of the University of Wisconsin–Madison’s Applied Population Laboratory reveals that the law reduced the proportion of unvaccinated children entering kindergarten in California — but that reduction was modest. Following the passage of AB-2109, the exemption rate dropped from its peak of 3.3 percent of kindergarteners to 2.7 percent in each of the following two years.