Table I.
Vaccination schedule
| Cohort | Vaccination group (n) | First vaccination (September-October) | Second vaccination⁎ (November-December) | Third vaccination (October next year) | Total follow-up time |
|---|---|---|---|---|---|
| 2003 and 2004 (n = 363) | Influenza plus pneumococcal vaccination (122) | TIV+PCV7 | TIV+PCV7 | TIV | 18 months |
| Influenza vaccination alone (117) | TIV+plac | TIV+plac | TIV | 18 months | |
| Control vaccination (124) | HBV+plac | HBV+plac | HBV | 18 months | |
| 2005 (n = 216) | Influenza plus pneumococcal vaccination (75) | TIV+PCV7 | TIV+PCV7 | — | 6 months |
| Influenza vaccination alone (70) | TIV+plac | TIV+plac | — | 6 months | |
| Control vaccination (71) | HBV+plac | HBV+plac | — | 6 months |
⁎
Maximum of 60 days after the first vaccination.