Cholera cases as of Wednesday rose to 733 with 26 deaths since the beginning of the outbreak on April 23 in Juba.
World Health Organization or WHO and the national Health ministry in their situation report on Wednesday said majority of the deaths testified in Juba Teaching Hospital died on arrival.
It said the most affected villages include Gumbo in Rajaf Payam, Gudele One in Munuki, Tomping in Juba and Gudele Two in Northern Bari Payams.
The report said the risk factors for cholera in Juba include drinking untreated river water supplied by tankers, poor latrine use, eating foods sold on the roadside and at makeshift markets.
Other factors increasing the risk of cholera include poor hygiene resulting from lack of hand washing, open defecation, poor community handling of dead bodies and unsupervised burials.
Juba City Council closed down most restaurants and roadside food vendors.