Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinians receive an injection of the Covid-19 vaccine, at a hospital in the West Bank city of Ramallah on March 21, 2021. Photo by Flash90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinian medical workers receive Pfizer-BioNTecha vaccine against the Coronavirus at the Palestinian Medical center in the West Bank city of Dura on March 21, 2021. The Palestinian Authority received a limited number of vaccine doses that will be used for vaccination of medical staff and elderly citizens over the age of 75. Photo by Wisam Hashlamoun/FLASH90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90

Palestinians receive an injection of the Covid-19 vaccine, in the West Bank city of Nablus, March 21, 2021. Photo by Nasser Ishtayeh/Flash90