A guy sobbing for assistance was holding a boy who had blood on his scalp at the southern Gaza hospital, Nasser.

Beneath a blanket lay another youngster who had tears in his eyes and a gash on his cheek. A third waited for help, his face smeared with blood.

The health ministry of the enclave stated that 54 people had already died as a result of Israeli airstrikes within hours of the end of a week-long truce between Israel and the Palestinian organization Hamas, which controls Gaza.

Reuters footage from Nasser Hospital, the second largest in the Gaza strip, showed a steady stream of wounded being brought in as other people wept outside beside bodies of loved ones killed in strikes.

Aid groups and the United Nations say a small fraction of health facilities in the devastated enclave are still functioning and those are in no shape to handle a new wave of casualties.

“Hospitals across Gaza lack the basic supplies, staff and fuel to deliver primary health care at the scale needed, let alone safely treat urgent cases,” U.N. Secretary-General António Guterres said on Thursday.

Palestinian health authorities that the U.N. deems credible say more than 15,000 Gazans have been confirmed killed and thousands more are missing and feared buried under rubble. The U.N. says as many as 80% of the population may have been driven from their homes.