At least four people were killed and 17 others were wounded in the air strike, WHO chief Tedros Adhanom Ghebreyesus said in a post on X on Sunday.
Khaled al-Dakran, a spokesman for the hospital, said several journalists were among the wounded in the attack, reports Al Jazeera.
Israel’s military said the attack targeted a command centre operated by the Palestinian Islamic Jihad armed group.
The Government Media Office in Gaza said the air strike hit a tent where displaced people were sheltering and journalists were working.
Reporting from the hospital grounds, Al Jazeera’s Hind Khoudary said displaced Palestinians at the hospital were “terrified” after the attack.
“Everyone is terrified here. They have been seeking refuge inside this hospital for more than six months now,” she said.
Al-Dakran called on the international community to ensure protection for health work.
Bd-pratidin English/Lutful Hoque