Health workers work at a testing site for COVID-19 in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)

A staff member works at a testing site for COVID-19 in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)

A cameraman works at the gate of Avondale College in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)

A jogger runs past the gate of Avondale College in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)

Staff members work at a testing site for COVID-19 in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)

Drivers wait to receive nucleic acid tests at a testing site for COVID-19 in Auckland, New Zealand, Aug. 20, 2021. New Zealand reported 11 new Delta cases of COVID-19 in the community on Friday, bringing the total number of cases associated with the current Auckland community outbreak to 31. The current top level 4 national lockdown will be extended until 11:59 p.m. on Aug. 24, Prime Minister Jacinda Ardern announced at a press conference. (Photo by Zhao Gang/Xinhua)