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1) What is herd immunity - 'Herd immunity,' also known as 'population immunity,' is the indirect defense against an infectious disease that occurs when a population has acquired immunity through vaccination or prior infection.
Epidemiologists believe that disease does not occur in a population at random, but rather occurs when the right combination of risk factors or determinants appears in a single person.
Key word --not occur in random
Key word --not occur in random
Infectious diseases differ by geography and population and are evolving over time. One of the key factors is migration. People move from one place to another [3].
So when Octa said “When you do an examination of the details, for example there are certain regions that are not high-risk… They actually don’t need 70 percent to get herd immunity,” OCTA fellow Guido David said in an interview with “The Chiefs” on One News/TV 5
We go back to the definition of HERD IMMUNITY. When the majority of a population is resistant to an infectious disease, it gives indirect protection to those that aren't.
Example. if 80% of a population is resistant to infection, 4 out of every 5 individuals who come into contact with someone who has the disease will not become ill (and therefore will not transmit the disease).
Until infection rates begin to go down, 50 %t to 90 % of a population must have immunity, depending on how infectious an infection is. Is 35 Million anywhere near the 50% minimum assuming the R0 of COVID 19 is 1? No. In a post by JHU they said that at least 70% be vaccinated
