Table 1.
Vaccinated individuals with at least one event within 7 days of vaccination by geographical area, type of vaccine and characteristics
| Number of subjects vaccinateda | |||
|---|---|---|---|
| Total | With any event (%) | OR (95% CI) | |
| Geographical area | |||
| Nord-west (Piedmont, Liguria) | 1376 | 352 (25.6) | 1 |
| Nord-east (Friuli Venezia Giulia, Emilia Romagna) | 651 | 203 (31.2) | 1.32 (1.07–1.62) |
| Centre-South (Lazio, Apulia) | 1186 | 290 (24.5) | 0.94 (0.79–1.13) |
| Type of vaccinesb | |||
| Subunit (2) | 1636 | 444 (27.1) | 1 |
| Adjuvanted (1) | 526 | 114 (21.7) | 0.74 (0.59–0.94) |
| Split (3) | 660 | 138 (20.9) | 0.71 (0.57–0.88) |
| Intradermal (1) | 394 | 149 (38.1) | 1.65 (1.31–2.08) |
| Agec | |||
| ≤ 14 | 651 | 208 (32.0) | 1.98 (1.46–2.68) |
| 15–25 | 142 | 70 (49.3) | 4.10 (2.71–6.22) |
| 26–65 | 1174 | 310 (26.4) | 1.51 (1.14–2.02) |
| 66–79 | 854 | 183 (21.4) | 1.15 (0.85–1.56) |
| ≥ 80 | 381 | 73 (19.2) | 1 |
| Sex | |||
| Males | 1614 | 373 (23.1) | 1 |
| Females | 1599 | 472 (29.5) | 1.39 (1.19–1.63) |
| Seasonal vaccination, 2014–2015d | |||
| Yes | 1958 | 490 (25.0) | 1 |
| No | 805 | 241 (29.9) | 1.28 (1.07–1.54) |
| High risk condition e | |||
| No | 454 | 134 (29.5) | 1 |
| Yes | 2253 | 581 (25.8) | 0.83 (0.66–1.04) |
| Total | 3213 | 845 (26.3) | |
a vaccinated with one dose of flu vaccine
b number of different products in brackets
c Age not available for 11 subjects
d Seasonal vaccination for 2014–2015 not available for 542 subjects
eInformation on high risk condition not available for 506 subjects. High risk conditions include older people, pregnant women and people with chronic health conditions; these are the target for the influenza vaccination programme in Italy. [8]
OR odds ratio, CI confidence interval