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| Methods | Quasi‐randomized controlled trial | |
| Participants | Same as Benenson 1968b‐i | |
| Interventions |
Injected cholera vaccine: purified freeze‐dried Ogawa antigen Placebo: tetanus toxoid |
|
| Outcomes | Same as Benenson 1968b‐i | |
| Location | East Pakistan | |
| Notes | This trial reports results results for the purified Ogawa antigen vaccine. Benenson 1968b‐i reports results for Classical bivalent KWC vaccine | |
