Recently, Shanghai has accelerated the layout and construction of normalized nucleic acid test sites. The test sites have been set up in a manner that enables all residents to reach one within a 15-minute walk from their homes or offices.As of the evening of May 12, more than 9,900 nucleic acid test sites have been set up in the city.Recently, Shanghai has accelerated the layout and construction of normalized nucleic acid test sites. The test sites have been set up in a manner that enables all residents to reach one within a 15-minute walk from their homes or offices.As of the evening of May 12, more than 9,900 nucleic acid test sites have been set up in the city.