Ty21a vaccine (three doses) vs control: Cases of typhoid fever, Year 3
Ty21a vaccine (three doses) probably leads to lower cases of typhoid fever, Year 3 compared with control (moderate certainty).
What each review found
Current versions only| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Ty21a vaccine (three doses) vs control Cases of typhoid fever, Year 3 · adults and children aged 5 years of age and older Ty21a vaccine (three doses) probably leads to lower cases of typhoid fever, Year 3 compared with control (moderate certainty). Vaccines for preventing typhoid fever (2018) · Cochrane Headline outcomes only | RR 0.44 [0.25, 0.76] | 3 studies · 76296 participants | Moderate |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Vaccines for preventing typhoid fever 2018 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.