Epidemic characteristics of Cornona virus disease 2019 in Wangkui County, Heilongjiang Province in January 2021
10.3760/cma.j.cn231583-20220408-00110
- VernacularTitle:2021年1月黑龙江省望奎县新型冠状病毒肺炎疫情流行特征分析
- Author:
Fei GAO
1
;
Zhe JIAO
;
Xinglu YAN
;
Hongqi FENG
;
Jun XU
;
Jingjing LI
;
Yanbo SUN
;
Xue LIU
;
Lan ZHAO
;
Quan LI
;
Shichun YAN
;
Jianhui TANG
;
Dianjun SUN
;
Wei SUN
Author Information
1. 黑龙江省疾病预防控制中心食品安全与学校卫生所，哈尔滨 150030
- Keywords:
Cornona virus disease 2019;
Aggregation epidemic;
Asymptomatic patient;
Epidemic characteristics
- From:
Chinese Journal of Endemiology
2022;41(11):934-939
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze the epidemic characteristics of Cornona virus disease 2019 (COVID-19) in Wangkui County, Heilongjiang Province, and to provide a reference for optimizing epidemic prevention and control strategies.Methods:The epidemic characteristics of COVID-19 in Wangkui County, Heilongjiang Province in January 2021 were analyzed by applying the national infectious disease report system and information management system of Heilongjiang Provincial Center for Disease Control and Prevention, the public health emergency report management information system, the epidemiological investigation report of the Heilongjiang Provincial Center for Disease Control and Prevention and Suihua Municipal Certer for Disease Control and Prevention, and the epidemic information publicly released by the Health Commission of Heilongjiang Province.Results:From January 9 to February 5, 2021, 804 cases infected with Cornona virus were reported in Wangkui County, with an infection rate of 280.29/100 000. The epidemic affected 20 districts and counties in 6 cities, including Suihua, Harbin, Mudanjiang, Qiqihar, Yichun and Daqing. The sex ratio of male to female was 1.08 ∶ 1.00 (418 ∶ 386), the age ranged from 3 months to 93 years old, and the median age was 50 years old. The proportion of confirmed cases and asymptomatic infection was 1.23 ∶ 1.00 (444 ∶ 360), there were significant differences in gender, age and occupation between them ( P < 0.05). There were 314 places where the aggregation epidemic occurred, with family aggregation as the main way (300 households, 95.54%). The places with the highert average number of cases were banquets (25.75 cases/place) and grocery stores/chess and card rooms (16.00 cases/place). Conclusions:In January 2021, the epidemic of COVID-19 in Wangkui County is a typical outbreak in rural areas of North China. The main reasons for the rapid spread of the epidemic are a large number of gathering activities, frequent contact of personnel in confined spaces and other factors.
