Real-world trial of Pfizer COVID vaccine finds high 2-dose, good 1-dose protection

Mary Van Beusekom | News Writer | CIDRAP News Feb 24, 2021 Two doses were 92% effective in preventing infection, but 1 dose was 74% effective against COVID-related hospitalization and 72% effective at preventing death. Mary Van Beusekom | News Writer | CIDRAP News Feb 24, 2021 Two doses were 92% effective in preventing infection, […]

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