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A health worker takes a swab sample from a man at a mobile COVID-19 test facility in Islamabad, capital of Pakistan, on Sept. 4, 2020. (Xinhua/Ahmad Kamal)
A health worker takes a swab sample from a man at a mobile COVID-19 test facility in Islamabad, capital of Pakistan, on Sept. 4, 2020. (Xinhua/Ahmad Kamal)