Herd immunity was a theory introduced in 1930's & referred to NATURAL, not artificial immunity. They adapted it into vaccines & the theory still only states herd immunity to work if 98% of the entire population is vaccinated. Which has never been done in the history of vaccines- https://twitter.com/H0tmylk/status/1260485358137065472

- and physically can't be done because there is more than 2% of the population unable to be vaccinated... therefore is only a theory, and never proven. Next.