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Nucleic acid testing Tongzhou District Songzhuang Town Huaqing Studio Cdc Tongzhou District Center for Disease Control and Prevention
12-19
![Beijing Tongzhou District Center for Disease Control and Prevention: A student in a studio in Songzhuang tested positive for nucleic acid[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)