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Pfizer, Moderna vaccines reduce COVID-19 infection risk by 90% after second dose: US study

COVID-19 vaccines developed by Pfizer Inc with BioNTech SE and Moderna Inc are highly effective nand reduced the risk of infection by 90% by two weeks after the second shot

Reuters , Monday 29 Mar 2021
USA
FILE PHOTO: EMT Lenny Fernandez prepares a Pfizer coronavirus disease (COVID-19) vaccination at a mobile vaccination drive for essential food processing workers at Rose & Shore, Inc., in Vernon, Los Angeles, California, U.S., March 17, 2021. REUTERS
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The COVID-19 vaccines developed by Pfizer Inc with BioNTech SE and Moderna Inc are highly effective nand reduced the risk of infection by 90% by two weeks after the second shot among healthcare personnel and first responders, according to a the US study released on Monday.

The findings from a study by the US Centers for Disease Control and Prevention of the real-world use of these messenger RNA (mRNA) vaccines confirm what was seen in large controlled clinical trials conducted before they received emergency use authorizations from the US Food and Drug Administration.

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