Palestinian volunteers disinfect the entrance of a school which belongs to the United Nations Relief and Works Agency for Palestinian Refugees (UNRWA) amid the spread of the COVID-19, in Deir al-Balah, central Gaza Strip, on April 2, 2020. (Photo by Yasser Qudih/Xinhua)

Palestinian volunteers disinfect the entrance of a school which belongs to the United Nations Relief and Works Agency for Palestinian Refugees (UNRWA) amid the spread of the COVID-19, in Deir al-Balah, central Gaza Strip, on April 2, 2020. (Photo by Yasser Qudih/Xinhua)

A Palestinian volunteer disinfects the entrance of a school which belongs to the United Nations Relief and Works Agency for Palestinian Refugees (UNRWA) amid the spread of the COVID-19, in Deir al-Balah, central Gaza Strip, on April 2, 2020. (Photo by Yasser Qudih/Xinhua)