We conducted active case search in health facilities and communities, interviewed and line-listed case-patients, filled case investigation forms and collected stool samples for RDTs. We sent RDT positive stool samples to National Public Health Laboratory (NPHL) for confirmation using culture or polymerase chain reaction (PCR). A suspected cholera case was any resident of Malakal presenting with or dying from AWD from February 1, 2023. A confirmed case was a suspected case with Vibrio Cholerae 01 or 0139 infection confirmed by culture or PCR. We analysed preliminary outbreak data by computing frequencies, proportions, attack rates (AR) and case-fatality rate (CFR), and plotting epidemic curve.  