Incidence of typhoid fever at 27 months for Salmonella typhi Vi conjugate vaccine v placebo in Vietnamese childrenâ€
| Protocol | Vaccine | Placebo | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| †Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | ||||
| All randomly allocated children | 0.08% | 0.93% | 91% (78 to 96) | 119 (89 to 163) |
| Children who received 2 correctly labelled injections | 0.07% | 0.84% | 91% (77 to 97) | 130 (95 to 184) |