Table 2 Effectiveness of influenza vaccines in HIV-infected patients
Study | Outcome Studied | Vaccine | Control | Risk Difference (95% C.I.) | NNV* | Vaccine effectiveness ** |
|---|---|---|---|---|---|---|
Tasker 1999 [26] | Symptoms of respiratory illness, at least 4 fold increase in antibody titre, viral culture | 16/55 | 23/47 | -0.198 (-0.387, -0.01) | 5 | 41% |
Fine 2001, [4] | Influenza like illness or a 4 fold increase in antibody titers or isolation of influenza virus | 19/42 | 18/29 | -0.168 (-0.404, -0.067) | 6 | 27% |
Raineri 2005, [34] | Influenza illness | 12/90 | 34/55 | -0.485 (-0.632, -0.337) | 3 | 78% |
Yamanaka 2005, [27] | Influenza like symptoms with at least 4 fold increase in antibody titre or viral isolation in culture | 16/262 | 14/66 | -0.151 (-0.255, -0.048) | 7 | 71% |