The Hamas-run health ministry in the Gaza Strip said on Wednesday it had exhausted its supply of children's vaccines, warning of "catastrophic health repercussions".
The announcement came more than two months into the Israel-Hamas war in Gaza as international aid organisations have warned about the dire conditions in the crowded Palestinian territory.
The ministry did not specify which vaccinations had run out, and its claim could not be independently verified.
Tedros Ghebreyesus, head of the World Health Organisation, warned on Sunday that "Gaza's health system is on its knees and collapsing," with 14 of 36 hospitals only partially functioning and supplies running low.
"The risk is expected to worsen with the deteriorating situation and approaching winter conditions," he said.
Stay up to date with the latest news. Follow KT on WhatsApp Channels.
The Gaza health ministry called on international institutions to deliver urgently needed vaccines "to prevent disaster".
Israel has waged a 68-day war against Hamas which rules the Gaza Strip since its gunmen launched the October 7 attacks.
Israel's bombing and ground offensive since has killed over 18,400 people in the Gaza Strip, mostly women and children, according to the health ministry.
The Ukrainian president says 31,000 Ukrainian soldiers had been killed in the war with Russia
Herbert Fritz, a veteran far-right extremist and co-founder of a minor far-right party, was arrested last year accused of spying
It causes panic as residents in several cities and villages feel the quake, no reports of damage or injuries
In his march to a White House rematch with Joe Biden, the former president beats Nikki Haley in her home state, South Carolina
He also expresses concern about escalating violence in the east region of the Democratic Republic of Congo
Russia still controls roughly a quarter of the country after Ukraine failed to meet expectations with its summer-time counteroffensive not producing major breakthroughs
Spokesperson says authorities gave an ultimatum to the mother of the opposition leader to agree to a secret funeral