Study reports robust immunity to SARS-CoV-2 including Omicron BA.1 for all three primary vaccines

In a recent study posted to the medRxiv* pre-print server, researchers in the United Kingdom investigated the effect of two Pfizer/BioNTech BNT162b2 vaccine doses or Oxford/AstraZeneca AZ1222 coronavirus disease 2019 (COVID-19) vaccination and a subsequent BNT162b2 booster dose in a cohort of healthcare workers (HCWs) over six to nine months.