In a post on X, the agency’s partners said staff “continue to provide healthcare however possible”.
The suffering of displaced Palestinians continues in Gaza as water, food, medicine, and shelter disappear.
“We pray to God that it stops,” said Ghazi Abu Issa, who fled his home and sought shelter in the central town of Deir el-Balah. “There is no water, electricity, food, or bathrooms.”
Those living in tent cities have been drenched by winter rain and flooding.
Israel has ordered Palestinians to evacuate areas that make up two-thirds of the tiny coastal territory.
Most of the displaced are packed into the southern town of Rafah near the border with Egypt, where many are living in squalid tent camps and overflowing UN-run shelters.
The UN estimates 1.9 million people – or 85 percent of Gaza’s population – have been forced from their homes due to the Israeli bombardment and attacks.
The number of people killed in Israeli attacks since the start of the war has risen to at least 27,708, according to the latest figures by the Health Ministry in Gaza.
An additional 67,147 have been wounded, the ministry said.
In the past 24 hours alone, 123 Palestinians were killed and 169 were wounded in Israeli strikes, it added.