In vitro studies reported in NEJM show that Pfizer/Moderna vaccines were still able to neutralize variant B.1.351 from South Africa despite reduction in neutralizing antibodies. Authors’ opinion is that vaccine remains efficacious. More to follow.

Medical Mythbusting Commentary for February 18, 2021

Pfizer says South African variant could notably cut down vaccine protection

Neutralizing Activity of BNT162b2-Elicited Serum — Preliminary Report
Serum Neutralizing Activity Elicited by mRNA-1273 Vaccine — Preliminary Report