The COVID-19 vaccine developed by Pfizer and its German partner BioNTech remains 91% effective at protecting against coronavirus for at least six months after the second dose.
Pfizer's COVID vaccine effective for at least six months, protects against variants, study says
NY Daily News - 1 Apr 2021 15:06
The COVID-19 vaccine developed by Pfizer and its German partner BioNTech remains 91% effective at protecting against coronavirus for at least six months after the second dose.
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