Table 1 Rate of infection during the study period (Dec 16, 2020–Sep 30, 2021) across the four vaccination categories (excluding 309 people infected before Dec 15, 2020)
Status | Person-days | No. of infections | Rate per 10,000 person-days | Unadjusted vaccine effectiveness % (95% CI) | Adjusted vaccine effectiveness % (95% CI)* |
|---|---|---|---|---|---|
Unvaccinated | 219,842 | 114 | 5.19 | Reference | Reference |
First dose (< 14 days) | 51,329 | 17 | 3.31 | 44.8 (0.13–69.5) | 38.8 (− 10.8–66.2) |
First dose (14+ days)† | 51,231 | 7 | 1.37 | 78.9 (51.6–90.8) | 75.5 (43.9–89.3) |
Fully vaccinated‡ | 830,084 | 49 | 0.59 | 87.5 (83.0–90.8) | 82.3 (75.1–87.4) |