Nature
Volume 602 Issue 7898, 24 February 2022
https://www.nature.com/nature/volumes/602/issues/7898

Article | 23 December 2021 | Open Access
Omicron extensively but incompletely escapes Pfizer BNT162b2 neutralization
Plasma from individuals vaccinated with BNT162b2 exhibits 22-fold less neutralization capacity against Omicron (B.1.1.529) than against an ancestral SARS-CoV-2 strain but residual neutralization is maintained in those with high levels of neutralization of ancestral virus.
Sandile Cele, Laurelle Jackson, Alex Sigal