The government has faced increasing public backlash amid claims its flood preparations and response was grossly inadequate.
WHO says it is working to implement a range of health activities in cooperation with other international relief agencies operating in flood affected areas.
Emergency support is currently being mobilised, particularly food, shelter, water, sanitation, hygiene and health services.
MORE FLOOD RELIEF
The Korean government announced on Tuesday it would provide $50,000 in humanitarian aid through WHO to help Sudan recover from floods, including the distribution of hygiene items and disease control.
The German government also pledged 450,000 euros on Tuesday to help with emergency relief, bringing the total humanitarian aid for Sudan this year to about 3.1 million euros.
Similar flood relief was earlier provided by Saudi Arabia, Morocco, Qatar, UAE, Egypt, US, Japan and Ethiopia.
As aid continues to flow from international donors, there have been claims that relief supplies destined for flood victims have been stolen and funds mismanaged.
Meanwhile, the EU said it plans to dispatch humanitarian aid experts to urgently assess the needs on the ground.