Single Vaccination with BNT162b2 or ChAdOx1 in Older People Induces Equivalent Antibody Generation but Enhanced Cellular Responses after ChAdOx1

Study in 165 people aged ≥80 years found that a single dose of either the BNT162b2 or ChAdOx1 vaccine induced humoral immunity in most donors (antibody responses against spike protein detectable in 93% and 87%, respectively) and are markedly enhanced by previous infection.

Source:

The Lancet