[AstralStorm]

Not practical, unfortunately. Plus, in typical conditions, neither of the viruses is highly problematic. Only when you get both at the same time you're more likely to suffer, and when unvaccinated to either.

Kind of the same problem with COVID, it can also contribute to a terrible secondary infection. In this case, quite some time after even recuperating from it.

[Pyramus]

To add to the thought experiment: If it were possible to isolate every single human being (and animal etc.) a considerable number of pathogens would die out.