We acknowledge the support of the health workers, physicians, nurses, and other clinical and laboratory staff who contributed to this study in Douala and Yaoundé and to the participants in the Soboum Health Area in Douala who gave their time to make this study possible. In particular, we acknowledge the Littoral Regional Delegate; Dr. Pulcherie Nguele, District Medical Officer of Nylon Health District; and Dr. Irene Yatabene, head of Soboum Health Center, who provided guidance for the protocol, allocated space for the study, and facilitated contact with the community. We also acknowledge André Pascal Goura, Maponjou Sybelle, Feudjio Ismael Kengmo, and Buh Nkum Collins, who contributed to participant enrollment; vaccine administration; data collection and analysis; and sample collection, transport, and analysis at study site and in the laboratory. We also acknowledge the Centre for Infectious Disease Research in Zambia, especially John Mwaba and Dr. Roma Chilengi, who provided training for the vibriocidal assay and to Dr. Jason Harris who provided monoclonal antibody to help standardize the vibriocidal assay.
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