Majdi Dheir (L), head of the preventive medicine department in Gaza, and Ashraf al-Qidra, spokesman of the Gaza health ministry, attend a news conference at the Al-Shifa Medical Complex, in Gaza City, Aug. 23, 2021. Palestinian health officials on Monday announced that the first cases of Delta variant of COVID-19 were confirmed in the besieged Gaza Strip, home of more than 2 million Palestinians. The health ministry under the Islamic Resistance Movement (Hamas) said in a press statement that it recorded three fatalities and 663 new COVID-19 cases in the last 24 hours, and most of the infections are with Delta variant. (Photo by Rizek Abdeljawad/Xinhua)

A man receives a dose of the COVID-19 vaccine during a vaccination campaign at a medical center in Gaza City, Aug. 23, 2021. Palestinian health officials on Monday announced that the first cases of Delta variant of COVID-19 were confirmed in the besieged Gaza Strip, home of more than 2 million Palestinians. The health ministry under the Islamic Resistance Movement (Hamas) said in a press statement that it recorded three fatalities and 663 new COVID-19 cases in the last 24 hours, and most of the infections are with Delta variant. (Photo by Rizek Abdeljawad/Xinhua)

A man receives a dose of the COVID-19 vaccine during a vaccination campaign at a medical center in Gaza City, Aug. 23, 2021. Palestinian health officials on Monday announced that the first cases of Delta variant of COVID-19 were confirmed in the besieged Gaza Strip, home of more than 2 million Palestinians. The health ministry under the Islamic Resistance Movement (Hamas) said in a press statement that it recorded three fatalities and 663 new COVID-19 cases in the last 24 hours, and most of the infections are with Delta variant. (Photo by Rizek Abdeljawad/Xinhua)

A medical worker prepares a dose of the COVID-19 vaccine during a vaccination campaign at a medical center in Gaza City, Aug. 23, 2021. Palestinian health officials on Monday announced that the first cases of Delta variant of COVID-19 were confirmed in the besieged Gaza Strip, home of more than 2 million Palestinians. The health ministry under the Islamic Resistance Movement (Hamas) said in a press statement that it recorded three fatalities and 663 new COVID-19 cases in the last 24 hours, and most of the infections are with Delta variant. (Photo by Rizek Abdeljawad/Xinhua)