Palestinian medical staff members work at a detection lab for COVID-19 in the West Bank city of Bethlehem, Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days. (Photos: Xinhua)

A Palestinian medical staff member works at a detection lab for COVID-19 in the West Bank city of Bethlehem, Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

A Palestinian medical staff member works at a detection lab for COVID-19 in the West Bank city of Bethlehem, Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

A medical worker takes a swab sample from a girl for a COVID-19 test in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

A medical worker takes a swab sample from a girl for a COVID-19 test in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

A medical worker takes a swab sample from a girl for a COVID-19 test in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

A medical worker takes a swab sample from a woman for a COVID-19 test in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

Medical workers check on a COVID-19 patient inside a house in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

Medical workers arrive to check on COVID-19 patients in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days. )

A medical worker checks on a COVID-19 patient inside a house in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.

Medical workers check on a COVID-19 patient inside a house in the West Bank village of Dura near Hebron, on Feb. 27, 2021. Palestinian Prime Minister Mohammed Ishtaye announced on Saturday that tightened precautionary measures against the spread of coronavirus will be imposed in Palestine for 12 more days.