Herd immunity is an unflattering term, but it's important: it means there's enough people that have been infected or vaccinated that the virus loses strength in its transmission through a society. And then the virus fades into the background, and stops spreading.
But we won't reach herd immunity if too many people are unwilling to be vaccinated. "It's important to vaccinate as many adults as possible as soon as possible," says Board-certified internist Dr. Jorge Rodriguez "If you want to open up America, get vaccinated."
Yet, due to the falsehoods spread by anti-vaxxers, about 20% of people said they definitely would not get vaccinated unless their job or school required it, according to the Kaiser Family Foundation. About 29% of Republicans said they definitely would not get a vaccine, and 28% of White Evangelical Christians said they definitely would not.
Because dogmatism makes people stupid.