The fact that all the variants are coming from other countries indicate that is an additional factor at play in the mutations. Whether it be environment, diet, medications, genetic makeup, something else...I have no idea. But if it was as simple as coming from virus reproduction, we would have probably had variants come from here.
As for herd immunity, I think we're at some level of that now. Between the vaccinated and people with natural immunity, the numbers say approximately 85% of Americans have some level of immunity. Many think 80% is the magic number.
But as already stated, additional variants that the vaccine (or natural immunity) are less effective against could throw a monkey wrench into all this.
As for herd immunity, I think we're at some level of that now. Between the vaccinated and people with natural immunity, the numbers say approximately 85% of Americans have some level of immunity. Many think 80% is the magic number.
But as already stated, additional variants that the vaccine (or natural immunity) are less effective against could throw a monkey wrench into all this.