Study population: baseline characteristics
| Patient characteristic | Unvaccinated n (% of total group of 106 978) | Vaccinated n (% of total group of 116 602) | P value (χ2) |
| Age group (years) | <0.001 | ||
| 0–59 | 31 796 (29.7) | 24 406 (20.9) | |
| 60–74 | 60 857 (56.9) | 55 992 (48.0) | |
| 75+ | 14 325 (13.4) | 36 204 (31.0) | |
| Sex, female | 53 571 (50.1) | 62 590 (53.7) | <0.001 |
| Cardiovascular disease | 16 253 (15.2) | 27 345 (23.5) | <0.001 |
| Pulmonary disease | 17 591 (16.4) | 18 942 (16.2) | 0.205 |
| Diabetes mellitus | 15 376 (14.4) | 24 095 (20.7) | <0.001 |
| Impaired resistance to infections | 7348 (6.9) | 6566 (5.6) | <0.001 |
| Chronic renal insufficiency | 3845 (3.6) | 6599 (5.7) | <0.001 |
| Respiratory disorder by neurological conditions | 4929 (4.6) | 6268 (5.4) | <0.010 |
| HIV | 214 (0.2) | 179 (0.2) | <0.001 |
| Number of acute respiratory infection consultations in 2019 | <0.001 | ||
| 0 | 96 794 (90.5) | 100 682 (86.3) | |
| 1 | 6363 (5.9) | 9294 (8.0) | |
| ≥2 | 3821 (3.6) | 6626 (5.7) |