From 2014 to 2016, California authorities took three separate actions meant to increase childhood vaccination rates, and a new study published yesterday in the Journal of the American Medical Association (JAMA) suggests these interventions were successful.

The observational study involved two bills and an educational campaign: In 2014, California passed a bill requiring parents to prove they had discussed the risks of not vaccinating their children with a healthcare provider before getting a personal belief exemption; in 2016 legislators took that one step further and banned all personal belief exemptions.

In between those two laws, in 2015, state and local health departments launched an educational campaign to educate school staff on conditional admission criteria that allowed students more time to catch up on vaccinations.

Limiting contacts among unvaccinated kids

Read more at CIDRAP…