Herd immunity [refers to] where [a] disease has gone through the population [and] the population has [developed] antibodies to it. I’ll give you an example. At any one time, 10 percent of the population is susceptible to measles. That was always the case, it actually kind of still is now.
But the herd immunity was that you get measles, you’re protected by your mother’s breast milk and in utero placental transportation of those antibodies… at about one or two, whenever you’re weaned you’re susceptible, so from a period of [age] one or two to 12 or 13, you get measles.
And then you have antibodies, and as an adult you’ve got the antibodies from the measles you had at the age appropriate time you had that disease that we evolved over millenia with. And so the herd immunity was that the very young were immune, because they got antibodies from their mother, and the old population was immune… and that was the herd immunity.
So, herd immunity is not that everyone gets vaccinated, we don’t even check who’s responding with antibodies, and everyone has to be vaccinated or it doesn’t work. Herd immunity is not what they’re telling you it is. That has been co-opted, there’s been a revisionistic rewriting of medical history.
— Toni Bark, MD, pediatrician