Study | Reason for exclusion |
---|---|
Keitel 1999 | Safety and immunogenicity study; vaccine not yet tested in efficacy studies |
Malkin 2005 | Nonrandomized dose‐finding study; no placebo group |
Ockenhouse 2006 | Nonrandomized open‐label safety and immunogenicity study |
Pombo 2002 | Nonrandomized study; a trial of repeated infection rather than vaccination |
Ramasamy 1995 | Nonrandomized study |
Saul 2005 | Safety and immunogenicity study; vaccine not yet tested in efficacy studies |