Volume 28, Number 6—June 2022
Research Letter
Serum Neutralization of SARS-CoV-2 Omicron BA.1 and BA.2 after BNT162b2 Booster Vaccination
Figure

Figure. Results of PRNT90 of serum against SARS-CoV-2 ancestral strain and Omicron sublineages BA.1 and BA.2 after BNT162b2 (Pfizer-BioNTech, https://www.pfizer.com) booster vaccination, Denmark. Serum samples were collected from 20 SARS-CoV-2–naive participants who received 2 BNT162b2 doses and a booster BNT162b2 dose. Viral genome sequences are available in GenBank (accession nos. ON055855 for the ancestral strain, ON055874 for BA.1, and ON055857 for BA.2). Red line indicates neutralization threshold; black lines indicate median neutralization titers for each strain. PRNT90, 90% plaque reduction neutralization test.