1) There are quite a few children with compromised immune systems (including most kids being treated for childhood cancers) who cannot, for medical reasons, be vaccinated. If you refuse to give your child the measles vaccine, for example, your kid could easily kill one of these kids. That's beyond irresponsible and borderline evil.
2) The second reasons is a little harder to understand but just as important. No vaccine is 100% effective in preventing infection. However they can eliminate a disease in a community by significantly reducing each person's odds of catching a disease. It's a concept called herd immunity - each individual may or may not be completely immune but the population is immune. Once a sizable number of parents stop vaccinating their kids, that herd immunity effect goes away and kids who are vaccinated start getting sick as a result.
Vaccine strain of measles identified in outbreaks
Putting vaccinated, shedding children in contact with immune compromised children is criminally stupid.
Herd immunity is a fallacy. If members of a group are immune, they are less likely to contract, incubate and spread to others. It does nothing for a susceptible person in contact with an infected person. The rest of "herd" doesn't mean anything. Immunity isn't absolute either. You can be infected in spite of "immunity" if your "titer" against the pathogen is insufficient to overcome a massive inoculation. A sub-clinical exposure may be effectively repelled with a low titer.
1) then maybe they should be homeschooling their kids if they are that sick instead of forcing everyone else to risk their kids with neurotoxiins and how is it not evil to put a gun to the heads of parents to force them to give their children a neurotoxin
2.) We both agree they aren’t 100% effective and to me vaccines are cost-benifit..if we were talking about polio then that’s something else but its the measles..having said that I don’t have issue with it being required to enter government schools, but it shouldn’t be forced on private schools or home schooling. Also since California wants to go this route then all parent’s who home school or send their kids to private school should not be taxed to pay for other people’s kids to go to public schools..imo that is borderline evil since it’s is theft