WHO representative for the Occupied Palestinian Territory, Rik Peeperkorn, said he had seen children who looked years younger than their age.
The organisation said the patients would be evacuated on Wednesday in a rare transfer out of the war-ravaged enclave.
Eradicated in Gaza 25 years ago, polio reappeared earlier this year amid the multiple humanitarian crises triggered by the war.
The ICJ issued an advisory opinion on July 19, which said that Israel’s occupation of the Gaza Strip and the West Bank, including East Jerusalem, “is unlawful.”
Israel’s Foreign Ministry rejected the ICJ’s opinion as “fundamentally wrong” and “blatantly one-sided.”
The hearing, which began on Monday, is expected to close on Feb. 26.
The report said abduction, sexual violence including rape, rose by 20 per cent in 2021, with attacks on schools and hospitals also showing an increase.
