Pfizer COVID-19 vaccine efficacy drops to 84% after 6 months, preprint study suggests
A new study involving the Pfizer-BioNTech COVID-19 vaccine suggests the jab’s efficacy drops to around 84% about six months after the second dose.
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Pfizer COVID-19 vaccine efficacy drops to 84% after 6 months, preprint study suggests
A new study involving the Pfizer-BioNTech COVID-19 vaccine suggests the jab’s efficacy drops to around 84% about six months after the second dose.