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Is herd immunity possible? New Covid vairants could be a problem


Passengers wearing face masks as a preventive measure against the spread of Covid-19 are seen on an escalator at Orlando International Airport.

Paul Hennessy | LightRocket | Getty Images

When the coronavirus pandemic started to sweep around the world in 2020, a number of governments and health authorities appeared to pin their hopes on “herd immunity.”

This approach would see the virus spread though society and cause infections, but also provoke an immune response in those who have recovered.

If enough people gained these antibodies — say, around 60-70% of the population — then the transmission of the virus would gradually decrease, and those who had not yet been infected would be…


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