S Africa Hopeful Of Herd Immunity As Covid Vaccination Opens For All Above 18

South African Health Minister Joe Phaahla is hopeful the country would achieve herd immunity against coronavirus if 70 per cent of its 18 to 35 population is vaccinated. According to 2019 mid-year estimates by Statistics South Africa, this age group makes up about a third of the country's population of 17.84 million people.

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