天津市B区一起家庭聚集性新型冠状病毒肺炎疫情调查分析

张红杰, 邢雅素, 李永刚

Epidemic status of a family cluster of coronavirus disease 2019 in district B of Tianjin municipality

ZHANG Hong-jie, XING Ya-su, LI Yong-gang

实用预防医学 . 2020, (9): 1037 -1039 . DOI: 10.3969/j.issn.1006-3110.2020.09.004