Anti-vaccers always make me think of things like these: https://en.wikipedia.org/wiki/Toxoplasmosis https://en.wikipedia.org/wiki/Toxoplasmosis I'm by no means

Anti-vaccers always make me think of things like these: https://en.wikipedia.org/wiki/Toxoplasmosis https://en.wikipedia.org/wiki/Toxoplasmosis I'm by no means a biologist, so I have no idea how much substance the idea has, but it seems to me like the existence of anti-vaccine mindsets in general should provide an evolutionary advantage for many strands of germs.