Efficacy of Pfizer in protecting from COVID-19 infection drops significantly after 5 to 7 months. Protection from severe infection still holds strong at about 90% as seen with data collected from over 4.9 million individuals by Kaiser Permanente Southern California. - MAS International News

Efficacy of Pfizer in protecting from COVID-19 infection drops significantly after 5 to 7 months. Protection from severe infection still holds strong at about 90% as seen with data collected from over 4.9 million individuals by Kaiser Permanente Southern California.

Efficacy of Pfizer in protecting from COVID-19 infection drops significantly after 5 to 7 months. Protection from severe infection still holds strong at about 90% as seen with data collected from over 4.9 million individuals by Kaiser Permanente Southern California. submitted by /u/talismanbrandi to r/science
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