My aunt had polio and it gave her a life long disability. I think the idea that it was "hand washing" that prevents polio is risible.
They'd invented "hand washing" in my aunt's day, she still got fecking polio.
What a coincidence that they invented the Salk vaccine in the 50s and polio dropped off dramatically after(!)
And no, not every vaccine is 100% but the deal is that for the one or two who don't get protection from it, the 99 vaccinated people around them can't spread it to them... because it worked for them.
www.theguardian.com/society/ng-interactive/2015/feb/05/-sp-watch-how-measles-outbreak-spreads-when-kids-get-vaccinated
The vaccine cannot help the virus mutate because the virus is deactivated. What helps the virus mutate is if there are enough incubators around to allow the full virus to enter cells and reproduce itself.
Why don't people want measles, chicken pox, whooping cough etc to be a memory like small pox? We know what these diseases do to healthy children (makes them miserable) and we know what they can do to vulnerable children and adults (maim and kill).
Even if it were true that some unvaccinated kids are "healthier" than vaccinated ones, then that's the most sleazy, selfish argument for putting unhealthy children who cannot be vaccinated at risk of death I have ever heard.
Are we really saying that it's worth risking lives of other more vulnerable children just because you think it's best if your own kid doesn't get the occasional sniffles as often as their classmates? Take one for the team, for heaven's sakes.