The United Nations Office for the Coordination of Humanitarian Affairs said on Thursday that the fighting in Sudan, which has caused shortages of food, water, fuel and cash in some areas, has led to a nearly fourfold increase in prices.

At the same time, the World Health Organization warned of the continued vulnerability of health care facilities to attack and occupation by parties to the conflict, noting that in the Sudanese capital, Khartoum, less than a fifth of health facilities are still operating at full capacity, and 60 percent of them are not fully operational.

The World Health Organization said that some health centers have reopened in the West Darfur region to provide treatment for emergencies, childbirth and chronic diseases.

The agency said that it is ready to send more than 110 tons of emergency medical supplies from Port Sudan to more than 13 destinations nationwide.

"We need urgent decontamination and safe passage to get these vital supplies to health facilities urgently needed for life-saving operations," the WHO said.

The United Nations High Commissioner for Refugees (UNHCR) said more than 164,000 people have sought refuge across the border since the fighting began on April 15, including the Central African Republic, Chad, Egypt, Ethiopia, Libya and South Sudan.

The International Organization for Migration estimates that 736,000 people have been displaced inside Sudan since the beginning of the conflict. Nearly 3.8 million people were already internally displaced within Sudan before the fighting began.

According to the United Nations Children's Fund (UNICEF), 82,000 children have fled to neighboring countries, while about 368,000 others have been newly displaced within Sudan.

UNICEF said that many of the communities receiving the displaced population have already been affected by multiple crises, with basic services already stretched and existing humanitarian capacity stretched.

The rainy season is expected to increase access challenges and increase disease risks.

UNICEF has also warned that the conflict is also disrupting cross-border trade and movement, while increasing the risk of food insecurity in vulnerable host communities.