Large observational study in Israel showed a third dose (booster) of the Pfizer–BioNTech vaccine had 90% effectiveness at preventing death due to Covid-19 compared to a two-dose regimen.
9 Dec, 2021 | 10:35h | UTCBNT162b2 Vaccine Booster and Mortality Due to Covid-19 – New England Journal of Medicine
Editorial: Booster Doses and Prioritizing Lives Saved