After the 2014 measles resurgence California passed some laws requiring students to be vaccinated. It worked!
Via the L.A. Times:
New data released Wednesday showed that the percentage of California's kindergartners as of last fall with all required vaccinations rose from 92.8% to 95.6%. Los Angeles County's rate jumped from 90% to 95%, and Orange County's from 92.5% to 95.5%.
More kindergartners were also getting the measles vaccination. An astonishing 97.3% of California's kindergartners reported receiving both measles shots, up from 94.5% a year ago and 92.6% reported in the fall of 2014, just before the Disneyland measles outbreak struck.
Perhaps the doomsday clock will tick a fraction of a second backwards.