March 29, 20212 min read, 490 words
Published: March 29, 2021 | 2 min read, 490 words
By , (Reuters) - COVID-19 vaccines developed by Pfizer Inc with BioNTech SE and Moderna Inc reduced risk of infection by 80% two weeks or more after the first of two shots, according to data from a real-world U.S. study released on Monday.The risk of infection fell 90% by two wee...
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