Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The geometric mean concentration (GMC) of anti-RBD antibody after a single dose of the AZD1222 vaccine (months)
| Time elapsed from the first dose of AZD1222 (month) | Sample (N) | GMC of anti-SARS-CoV-2 antibody (95%CI) (BAU/mL) | GMR (95%CI)* |
|---|---|---|---|
| Baseline level | 794 | 0.4 | |
| 1 | 238 | 20.14 (16.37, 24.77) | reference |
| 2 | 438 | 48.08 (42.76, 54.08) | 2.72 (2.21–3.33) |
| 3 | 479 | 65.01 (58.88,71.61) | 3.33 (2.73–4.05) |
*adjust with age, sex, underlying disease, GMR; geometric mean ratio, 95%CI; 95% confidence interval.
