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From the below link:
"Paul Hunter, professor in medicine at the University of East Anglia and an expert in infectious diseases, told the committee: "The concept of herd immunity is unachievable because we know the infection will spread in unvaccinated populations and the latest data is suggesting that two doses is probably only 50 percent protective against infection."
"Paul Hunter, professor in medicine at the University of East Anglia and an expert in infectious diseases, told the committee: "The concept of herd immunity is unachievable because we know the infection will spread in unvaccinated populations and the latest data is suggesting that two doses is probably only 50 percent protective against infection."
Delta variant has wrecked hopes of herd immunity, warn scientists
The delta variant has wrecked any chance of herd immunity, a panel of experts including the head of the Oxford vaccine team said as they called for an end to mass testing so Britain can start to live with Covid.
www.yahoo.com