According to the Tianjin Epidemic Prevention and Control Headquarters, from 0:00 to 24:00 on February 27, Tianjin reported that the nucleic acid test results of throat swab samples from 10 new coronavirus nucleic acid testing personnel were positive. Up to now, a total of 15 cases of positive infection have been reported in this round of epidemic, and they have been transferred to designated hospitals in the city. After the diagnosis by the municipal expert group, there are 13 confirmed cases (6 cases of common type, 7 cases of mild type) and 2 cases of asymptomatic infection. .