Cholera is an acute diarrhoeal disease that can kill within hours if left untreated due to severe dehydration. An oral cholera vaccine campaign in Iraq, consisting of 2 rounds of vaccines, is a key measure to help contain and control the outbreak. The Iraq government campaign, supported by WHO and UNICEF, reached over 232 000 displaced people above 1 year of age who were defined as high risk groups, based on a public health risk assessment in 62 camps for refugees and internally displaced persons. Of Iraqâ€™s 18 governorates, 17 have reported laboratory confirmed cases. This campaign is part of the cholera response strategy to prevent the further spread of the disease in high-risk areas and to avert a potentially large-scale cholera outbreak in the countryâ€™s more vulnerable camps.