Potential “Healthy Vaccinee Bias” in a Study of BNT162b2 Vaccine against Covid-19
Ronen Arbel, Ruslan Sergienko, Doron Netzer, Ariel Hammerman, Michael Friger, Alon Peretz, Talish Razi, Hadar Duskin-Bitan, Shlomit Yaron
Abstract
To the Editor: Using observational methods, Arbel et al. (Dec. 23, 2021, issue)1 calculated an adjusted 90% lower mortality due to Covid-19 among participants who received a first BNT162b2 vaccine ...
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