Figure 1.

Antibody titres following two doses of vaccine by type of vaccine (A), age (B), ethnicity (C) and pre-vaccination SARS-CoV-2 status (D). For C, South Asian indicates people who self-identified their ethnic origin as Indian, Pakistani, or Bangladeshi, and Black indicates people who self-identified their ethnic origin as Black, African, Caribbean or Black British. p values from Mann–Whitney test (A) and Kruskal–Wallis tests (B–D). Anti-S, anti-spike; IgGAM, immunoglobulin G, A or M. Dotted line = limit of detection.