Visiting medical team reported untreated open wounds, shortage of supplies to pin fractures and lack of food jeopardising treatment

• The obstacles to Gaza aid deliveries – visual guide

The medical situation in Gaza’s hospitals has reached an “unimaginable” state of crisis in which large open wounds are being left untreated and medical staff are facing chronic shortages of the most basic medical items, including surgical gauze and material to pin fractures.

The description of conditions was delivered by an emergency medical team organised by three aid groups that spent two weeks carrying out surgeries and other care at the European hospital near Khan Younis.

Exclusive: UN documents seen by the Guardian list hundreds of incidents, including claims workers were blindfolded and beaten

• Middle East crisis – live updates

UN staff working with Palestinians in the occupied West Bank have been subjected to a systematic campaign of obstruction and harassment by the Israeli military and authorities since the beginning of the conflict in Gaza five months ago, according to internal UN documents obtained by the Guardian.

The documents record hundreds of incidents ranging from the alleged blindfolding and beating of UN staff at checkpoints to the use of UN facilities by Israeli troops as firing positions during raids on refugee camps in which Palestinians were killed.