Variable | Levels | Antibody response < 0.5 IU/ml (n = 25) | Antibody response ≥ 0.5 IU/ml (n = 241) | ||
---|---|---|---|---|---|
n | % (95% CI) | n | % (95% CI) | ||
Age at vaccination (year) | |||||
 ≤ 1 | 12 | 48.0 (29.5–66.9) | 47 | 19.6 (14.9–25.0) | |
 > 1 | 13 | 52.0 (33.1–70.5) | 193 | 80.4 (75.0–85.1) | |
Gender | |||||
 Female | 5 | 20.0 (8.1–38.4) | 89 | 58.6 (50.6–66.2) | |
 Male | 8 | 32.0 (16.4–51.5) | 63 | 26.1 (20.9–31.9) | |
Number of vaccinations | |||||
 Once | 24 | 96.0 (82.8–99.6) | 194 | 80.5 (75.5–85.5) | |
 Twice | 1 | 4.0 (0.4–17.2) | 42 | 17.4 (13.0–22.6) | |
 More than twice | 0 | 0.0 (0–9.5) | 5 | 2.1 (0.8–4.5) | |
Time btw vaccination and sampling (months) | |||||
 < 3 | 1 | 5.3 (0.6–22.1) | 78 | 42.2 (35.2–49.4) | |
 3–6 | 8 | 42.1 (22.3–64.1) | 70 | 37.8 (31.1–45.0) | |
 > 6 | 10 | 52.6 (31.2–73.4) | 37 | 20.0 (14.7–26.2) | |
Vaccine used | |||||
 Only vaccine Wistar-G52 | 3 | 25.0 (7.6–52.9) | 39 | 25.7 (19.2–33.0) | |
 Only vaccine Pasteur RIV | 1 | 8.3 (0.9–32.8) | 63 | 41.4 (33.8–49.4) | |
 Only vaccine Flury LEP | 6 | 50.0 (24.3–75.7) | 25 | 16.4 (11.2–22.9) | |
 Other | 2 | 16.7 (3.6–43.6) | 25 | 16.4 (11.2–22.9) |