In this photo released by China's Xinhua News Agency, a worker wearing protective gear gives a COVID-19 test to a woman at a testing site in Xi'an in northwestern China's Shaanxi Province, Tuesday, Jan. 4, 2022. China is reporting a major drop in local COVID-19 infections in the northern city of Xi'an, which has been under a tight lockdown for the past two weeks. (Tao Ming/Xinhua via AP)
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