Epidemiological Investigation on the First Family Aggregation Epidemic of Novel Coronavirus Pneumonia in Yangzhou/ 扬州市首起输入性新型冠状病毒肺炎家庭聚集性疫情的流行病学调查

[Objective] To explore the transmission pattern of novel coronavirus pneumonia (NCP) in the population by describing an imported case of novel coronavirus infected pneumonia epidemic situation [Methods] Using the method of field investigation, epidemiological investigations were carried out for the imported NCP case and the close contacts related to this epidemic cluster Data were collected such as the date of onset, isolation of the case and the close contacts The novel coronavirus nucleic acid was collected from the throat swabs of the case and the close contacts These samples were detected by real-time fluorescence quantitative RT-PCR [Results] In this epidemic cluster，the imported NCP case introduced to Yangzhou had effected 36 people (12 people in the family and 24 people outside the family) and 2 people in the family were diagnosed as asymptomatic infections [Conclusion] In the process of transmission, NCP mainly exists in respiratory droplets and close contact transmission, which is easy to cause family aggregation epidemic