Hospitals in Gaza risk turning into morgues without electricity, the International Committee of the Red Cross (ICRC) says.
Gaza’s only power plant ran out of fuel on Wednesday, and back-up generators could stop working in hours, it adds.
Medical centres have been overwhelmed after Israel imposed a “complete siege” on Gaza and pounded the territory with air and artillery strikes.
Hamas launched an unprecedented attack on southern Israel on Saturday.
Israel has vowed not to restore electricity or allow basic resources and humanitarian aid into Gaza until Hamas releases around 150 hostages it abducted during its attacks on Saturday.
“As Gaza loses power, hospitals lose power, putting newborns in incubators and elderly patients on oxygen at risk. Kidney dialysis stops, and X-rays can’t be taken,” said Fabrizio Carboni, the ICRC’s director for the region.
“Without electricity, hospitals risk turning into morgues.”
He added that hospitals were still running on generators – but fuel would only last “for a few hours”.
Hospitals in Gaza are seeing long queues outside hospitals, with injured people waiting for emergency rooms. They are running out of essential medical equipment and appealing for blood donations.
Children – some seriously wounded – are lying in hospital beds crying, waiting for treatment.
Doctors are now having to make tough decisions on who to operate on as fuel supplies run critically low. Doctors say only life-saving treatment is being carried out in many cases.
The absence of humanitarian corridors is resulting in unprecedented problems for hospitals. In previous wars, the ICRC and UN were able to secure corridors to deliver aid but Israel has not yet allowed for this.
The main option being considered, the ICRC says, is the Rafah crossing between Gaza and Egypt.
Egypt says it has been trying to arrange aid deliveries through this crossing, but this has been made difficult by Israeli bombardment in the territory.
Those air strikes have meant people are also filling up hospitals to shelter, believing they are safer there than other parts of Gaza.
Dr Justin Dalby, who has been working in Gaza for six months with the humanitarian charity Médecins Sans Frontières (MSF) told the BBC that the number of injured was “just absolutely immense”.
He said there was “constant violence” as “destruction continues everywhere … day or night”.
“If you are taking out the electricity supply of a hospital, it means that lights go off. Monitoring equipment, oxygen delivery, mechanical ventilators, operating theatres and surgical equipment that require electricity will no longer be able to function,” he said.
![Map showing hospitals and health facilities, refugee camps and border crossings in Gaza](https://ichef.bbci.co.uk/news/1024/cpsprodpb/13DB2/production/_131403318_2087fc84-841e-4c30-b7ee-7825e55537f8.jpg)
Hamas took about 150 Israeli hostages into Gaza during its deadly attacks on southern Israel at the weekend that killed at least 1,200 people.
Israel’s Energy Minister Israel Katz said no “electrical switch will be turned on, no water hydrant will be opened and no fuel truck will enter” until the “abductees” are free.
Israel stopped supplies to the Gaza Strip after the Hamas attacks on Saturday.
More than 1,300 people have been killed in Gaza since Israel launched its air strikes on Saturday, according to the Palestinian Health Ministry. A further 5,339 have been injured.
Meanwhile, the UN agency for Palestinian refugees says more than 338,000 people have been displaced, with most sheltering in hospitals and UN schools.
“The human misery caused by this escalation is abhorrent, and I implore the sides to reduce the suffering of civilians,” Mr Carboni of the ICRC said.
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