Influenza activity phasea | Time since vaccination | Cases and controls (N/N) | Vaccinated cases and controls (N/N) | OR | Influenza VE % (95% CI) | Trend p valued |
---|---|---|---|---|---|---|
Early phase | 45–75 days | 110/63 | 1/8 | Crude | 94 (48;99) | 0.119 |
Adjusted | 95 (45;99)b | |||||
76–105 days | 128/66 | 19/11 | Crude | 13 (−96;53) | ||
Adjusted | 48 (−31;80)c | |||||
106–135 days | 131/64 | 22/9 | Crude | −23 (−186;47) | ||
Adjusted | 36 (−71;76)c | |||||
Late phase | 39–81 days | 29/16 | 0/1 | Crude | 0 | 0.518 |
Adjusted | 0 | |||||
82–123 days | 47/21 | 18/6 | Crude | −55 (−372;49) | ||
Adjusted | −9 (−379;75)b | |||||
124–166 days | 55/26 | 26/11 | Crude | −22 (−213;52) | ||
Adjusted | 15 (−214;77)b |