The first round of an Oral Cholera Vaccination (OCV) campaign in four priority counties of South Sudan with active transmission of cholera, has successfully concluded despite security and access challenges in some areas. The vaccination campaign started on the 29 July, 2017 to 4 August, 2017 in the Kapoeta state including Kapoeta South, Kapoeta North, and Kapoeta East while in Tonj East the campaign started on 5 August, 2017 and ended on 12 August, 2017.