深圳市龙岗区927名新冠病毒肺炎密切接触者流行病学特点

Epidemic Characteristics of 927 Close Contacts of Coronavirus Disease 2019 Patients in Longgang District,Shenzhen City

目的:分析深圳市龙岗区927名新型冠状病毒肺炎密切接触者流行病学特点。方法:收集2020年1月—2020年5月深圳市龙岗区927名新型冠状病毒肺炎密切接触者资料,对新型冠状病毒肺炎确诊病例、无症状感染者和新型冠状病毒肺炎核酸复阳人员密切接触者的基本情况及感染情况进行分析。结果:在927名新型冠状病毒肺炎密切接触者感染率为2.48%(23/927);927名新型冠状病毒肺炎密切接触者男性479名,女性448名,年龄为6个月77岁,中位年龄为33岁;不同年龄段的密切接触者的感染率比较差异有统计学意义(χ2=24.90,P<0.001),老年年龄段的密切接触者感染率相对较高;与关联病例不同接触方式的密切接触者的感染率比较差异有统计学意义(χ2=110.28,P<0.001),其中与病例为配偶关系的密切接触者感染率最高。结论:新型冠状病毒肺炎传染性强,应尽早采取综合防控措施,及时发现病人,并通过严格隔离措施控制管理密切接触者,遏制新型冠状病毒肺炎疫情的发生。

OBJECTIVE To analyze the epidemic characteristics of 927 close contacts of patients with Coronavirus Disease 2019(COVID-2019)in Longgang District of Shenzhen City. METHODS The data of 927 close contacts of patients with COVID-2019 in Longgang District of Shenzhen City from January 2020 to May 2020 were collected. The close contacts of patients with COVID-2019,the asymptomatic infections and the COVID-2019 patients with nucleic acid recovery positive were analyzed. RESULTS The infection rate of 927 close contacts of COVID-2019 patients was 2.48%(23/927);927 close contacts of coronavirus disease 2019 patients contacted with 479 males and 448 females,the age ranged from 6 months to 77 years old;the median age was 33 years.The infection rate of close contacts in different age groups was significantly different(χ~2=24.90,P<0.001),and the infection rate of close contacts in the elderly was relatively high. The infection rate of close contacts with different contact modes was statistically significant(χ~2=110.28,P<0.001),and the highest infection rate was found in the close contacts with the spouse. CONCLUSION As CIVID 2019 is highly infectious,comprehensive prevention and control measures should be taken as soon as possible,early detect patients,control and manage close contacts through strict isolation measures,so and prevent the COVID 2019 patients outbreak.