'A 60% infection rate will help build a degree of herd immunity': Why does Britain want it?
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Britain's scientific adviser Patrick Vallance said the authorities would contain the spread of the virus but would not suppress it completely. He said-a 60% infection rate will help build a degree of herd immunity. Herd immunity is when a large number of people are vaccinated against a disease, lowering the chances of others being infected by it. When a sufficient % of a population is vaccinated, it slows the spread of disease.