In this Feb. 7, 2020, file photo, people wearing masks attend a vigil for Chinese doctor Li Wenliang, who was reprimanded for warning about the outbreak of the new coronavirus, in Hong Kong. China has taken the highly unusual move of exonerating the doctor who was reprimanded for warning about the coronavirus outbreak and later died of the disease. An official media report said police in Wuhan had revoked its admonishment of Dr. Li that had included a threat of arrest and issued a “solemn apology" to his family. (AP Photo/Kin Cheung, File)
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