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.
via FOX NEWS https://foxnews.com/health/pfizer-covid-19-vaccine-efficacy-84-percent-after-6-months-preprint-study
