There was an article written a long time ago about why vaccines cause autism, which was debunked by the writers. But for some reason people still believe this. It's gotten to the point where people hold ' measles parties' where they put kids with measles in a room with kids who don't have it who haven't been vaccinated so they get sick. This apparently strengthens their immune systems ( it does, but they have a good chance of death ). I've seen posts about people doing this with coronavirus, which I pray to god is satire.