KHARTOUM, Sept. 10 (Xinhua) -- Sudan's Health Ministry on Tuesday announced that four cholera infection cases have been reported in Blue Nile state.

The ministry said in a statement that Sudan's Health Minister, Akram Ali Al-Tom, has officially reported the cases to the World Health Organization (WHO).

It also said two teams from the federal health ministry and the WHO have arrived in Blue Nile state to provide support through environment conservation, ensuring water and food safety and medical treatment.

Contaminated and stagnant water due to rains and floods usually causes the disease in some areas in Sudan.