Spike Antibody Levels of Nursing Home Residents With or Without Prior COVID-19 3 Weeks After a Single BNT162b2 Vaccine Dose

Preliminary data from French study (n=102) suggests single dose of Pfizer-BioNTech vaccine may be sufficient to obtain a high level of S-protein IgG antibody in residents (36 residents with prior COVID-19 seropositive after 1 vaccine dose vs 29 of 60 residents without COVID-19.

Journal of the American Medical Association