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Vaccine Group: Herd Immunity ‘Is Not a Possibility’

Hopes for herd immunity are fading. While vaccines have been shown to protect against severe illness, hospitalization and deaths, current data suggest they do not halt transmission, according to experts including the director of the Oxford Vaccine Group, Sir Andrew Pollard. While vaccines “may slightly slow the transmission process, as there is some evidence that inoculated people are infectious for a shorter period of time,” Pollard warned that “we don't have...