Herd immunity', also known as 'population
immunity', is a concept used for vaccination, in which a population can be protected from a certain virus if a threshold of vaccination is reached.
Herd immunity is achieved by protecting people from a virus, not by exposing them to it.
Updated 31 December 2020
www.who.int
Here I have watched and listened to Dr. Tony Fauci whenever he is allowed to speak. I recall one time he mentioned needing to vaccinate 75% of the population of the US to make it effective. This is going to prove difficult as it is estimated, by a couple of polls, that around 50% of the population will not get vaccinated. The 50% appears to be made up of religious zealots, conspiracy theorists, and coloured people.
The religious one's, well, here in Texarrse they still don't teach school kids about evolution. The wifes 2IC, a clever lady, devout god botherer, does not, and will not, acknowledge that dinosaurs existed. They extend to not wanting some unholy concoction conceived by science injected into their bodies.
The conspiracy theorists seem to think it is some big brother scheme. That the whole Covid thing was either invented to eventually come up with a cure that is really an excuse to inject everyone with some sort of RFID solution/chip to track the population - I kid thee not. Or, that it is a bio-weapon released by the Chinese.
And the coloured people; well they have a simplistic level of mistrust in the honkey and big government. Which, when you consider their history, is well founded. From the 1930's up until 1972 they was a study by the US Public Health Service and the CDC into the effects and history of untreated VD. Treatment was effectively withheld from African Americans in Tuskegee and they were monitored..........all without their knowledge.
en.wikipedia.org
So whatever happens vaccine wise it is going to be kicking around the lower levels of the socio-economic scale for a long time here in the US.............advanced, forward thinking, leader of the first world that it is.