[bmelton]

> Why? We're talking about controlling someone's potential infectiousness in the name of public health.

Because, as has been posted above, one's personal biome is never going to be aided by herd immunity.

In short, if I have Polio, the chances of it spreading to a mostly vaccinated society is lessened because any immunized individual breaks the infection chain.

They're slightly similar in concept, but not really. Beyond that, the argument seems to have been the result of a misunderstanding that has persisted beyond its correction. Not washing skin and hair with soap and shampoo is a dramatically different matter than not washing one's hands with soap and water.