Yeah I see a fair amount of antivax stuff on Scientologists' Facebooks. I think it is because Scientologists love chiropractors and chiros are antivax. I have tried to ask chiros why they are against vaccines. Can't they crack backs whether someone has polio or not? But so far I get no direct answer. I think Hubbard liked chiros because he saw how easy it was to make money with dress up doctoring and sciency gadgets. As we all know, he ripped off the e-meter from a chiropractor. His shtick, "Don't believe medical authorities; they're all corrupt and forced to follow the party line. Think for yourself by listening to me!" fits well with the chiropractic profession. Both Scientology and chiropractic rely upon vitalism or the belief in a transcendent life force that can heal you when you are sick and make you feel good. Illness or distress then must be due to a block of the natural flow of this living energy. If your spine is not straight, that restricts flow. If you eat the wrong foods, that gets in the way. If you are exposed to toxins, that also can block your flow. You must cleanse yourself of the bad things to open your inner being to the wonderful power of Nature. This branding of things as natural-good or unnatural-bad comes easily to us. It is as though we are wired to feel this intuition. But it misleads us often. I wonder why vaccines got branded as unnatural and bad? Back in the 1700s, people used the actual disease causing organism in ways meant to cause a mild form of disease to prevent serious outbreaks. That is a totally natural thing to do. Then they used a milder virus, cow pox, to prevent small pox. Also natural. No BigPharma involved. Later people learned that they could use dead virus or very weak strains of virus as vaccines. And now only small bits are used in inactivated vaccines. I am guessing that anti-vax remains because groups hang together when they have a common enemy.