New Variants Could Be 'Fully Resistant' Against Current Vaccines Or Previous Infection: WHO Director

2 years ago
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New variants of coronavirus could “become fully resistant to current vaccines or past infection,” Tedros Adhanom Ghebreyesus, the head of the World Health Organization, said Wednesday as he voiced concern about the spread of omicron and delta variants causing a “tsunami” of new COVID-19 cases.

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