Nearly two dozen people have died in a cholera outbreak in Sudan as the African nation reels from a 16-month conflict and devastating floods.

Health Minister Haitham Mohamed Ibrahim said in a statement that at least 22 people have died from the disease, and that at least 354 confirmed cases of cholera have been detected across the county in recent weeks.

Ibrahim didn't give a time frame for the deaths or the tally since the start of the year.

The World Health Organisation, however, said that 78 deaths were recorded from cholera this year in Sudan as of July 28.

The disease also struck more than 2400 others between January 1 and July 28, it said.

Cholera is a fast-developing, highly contagious infection that causes diarrhoea, leading to severe dehydration and possible death within hours when not treated, according to the WHO.

It is transmitted through the ingestion of contaminated food or water.

The cholera outbreak is the latest calamity for Sudan, which was plunged into chaos in April last year when simmering tensions between the military and a powerful paramilitary group exploded into open warfare across the country.

The conflict has turned the capital, Khartoum and other urban areas into battlefields, wrecking civilian infrastructure and an already battered health care system.

Without the basics, many hospitals and medical facilities have closed their doors.

It has killed thousands of people and pushed many into starvation, with famine already confirmed in a sprawling camp for displaced people in the wrecked northern region of Darfur.

Sudan's conflict has created the world's largest displacement crisis.

More than 10.7 million people have been forced to flee their homes since fighting began, according to the International Organization for Migration.

More than two million of those fled to neighbouring countries.

The fighting has been marked by atrocities including mass rape and ethnically motivated killings that amount to war crimes and crimes against humanity, according to the UN and international rights groups.

Devastating seasonal floods in recent weeks have compounded the misery.

Dozens of people have been killed and critical infrastructure has been washed away in 12 of Sudan's 18 provinces, according to local authorities.

About 118,000 people have been displaced due to the floods, according to the UN migration agency.

Cholera is not uncommon in Sudan.

A previous major outbreak left at least 700 dead and struck about 22,000 in less than two months in 2017.

Sudan's military-controlled sovereign council, meanwhile, said Sunday it will send a government delegation to meet with American officials in Cairo amid mounting US pressure on the military to join ongoing peace talks in Switzerland that aim at finding a way out of the conflict.

The council said in a statement the Cairo meeting will focus on the implementation of a deal between the military and the Rapid Support Forces, which required the paramilitary group to pull out from people's homes in Khartoum and elsewhere in the country.

The talks began August 14 in Switzerland with diplomats from the US, Saudi Arabia, Egypt, the United Arab Emirates, the African Union and the United Nations attending.