TABLE 1.
Comparison | RR | 95% CI | P value |
---|---|---|---|
Vaccination group | |||
KV versus NV | 0.88 | 0.60, 1.31 | 0.528 |
LAIV versus NV | 0.66 | 0.46, 0.95 | 0.028 |
Exposure group | |||
FE versus NE | 0.89 | 0.65, 1.21 | 0.437 |
Abbreviations: NE, near-exposed; FE, far-exposed; KV, killed influenza virus; LAIV, live-attenuated influenza virus; NV, sham vaccine.