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.

Egypt says it has been trying to arrange aid deliveries through its Gaza 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.