After suffering completely avoidable outbreaks of whooping cough and measles, California is sick of your shit, anti-vaxxers. Today Gov. Jerry Brown signed legislation making California the third state where parents cannot opt out of vaccinating their child with a personal belief exemption.

Mother Jones reports the law will require all kids in school be up-to-date on shots that prevent 10 childhood diseases. The only acceptable exemption is if a doctor finds there’s a legit medical reason a kid’s body can’t handle the shot. If a parent still refuses, they’re going to have to homeschool.

So this will also be a win for the tutor industry, as there are plenty of people opposed to the legislation. Some went so far as to send death threats to state senator/pediatrician Richard Pan, who introduced the legislation. At least a few have already promised to challenge the law in court, and are presumably now working out their legal strategy for the right to spread communicable diseases.