UN agencies and partners are scaling up response to the outbreak, which was first declared in Gedaref state, located in the east, on 26 September.
At least 2,525 suspected cases of acute watery diarrhoea/cholera have been reported, including 78 associated deaths, in 27 localities across seven states.
More than 3.1 million people are estimated to be at risk through the end of the year, according to the latest OCHA update.
Humanitarian agencies are supporting the detection and treatment of cases, while surveillance is ongoing in affected and high-risk areas to identify and address risk factors.
Last week, the sixth flight chartered by UN health agency, WHO, landed in Port Sudan, located on the Red Sea coast, from its Global Logistics Hub in Dubai.
