烟台市一起新型冠状病毒肺炎聚集疫情调查分析

刘涛, 徐丽芳, 郭培军

Investigation and analysis on a cluster epidemic of COVID-19 in Yantai City

LIU Tao, XU Li-fang, GUO Pei-jun

实用预防医学 . 2021, (3): 266 -268 . DOI: 10.3969/j.issn.1006-3110.2021.03.004