Pfizer-BioNTech's COVID-19 Vaccine Has Been Less Effective in South Africa at Keeping ... - Latest Tweet by Reuters

Pfizer-BioNTech's COVID-19 vaccine has been less effective in South Africa at keeping people infected with the virus out of hospital since the Omicron variant emerged last month, a real-world study published showed https://t.co/bTwEv270UP pic.twitter.com/3riImLdorr— Reuters (@Reuters) December 14, 2021

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