if you fear your kid getting a disease then keep your kid away from others or immunize them
Ignoring the shear absurdity of your suggestion, that's not the point. For the life of me, I cannot understand people who refuse to listen to science. The CDC is your friend. Seriously, please read this.
You need to learn about "hurd immunity". Here, I'll quote the NIH (another friend) for you:
When a critical portion of a community is immunized against a contagious disease, most members of the community are protected against that disease because there is little opportunity for an outbreak. Even those who are not eligible for certain vaccines—such as infants, pregnant women, or immunocompromised individuals—get some protection because the spread of contagious disease is contained. This is known as "community immunity."
We all love a good conspiracy theory, but this one has been thoroughly debunked. By advocating for non-immunization, you're putting innocents at risk.