Epidemic characteristics of close contacts of coronavirus disease 2019 in Xi'an/ 西安市新型冠状病毒肺炎密切接触者的流行特征
2020
Objective To explore the epidemic characteristics of close contacts of corona virus disease 2019(COVID-19) in Xi'an so as to provide reference for further prevention and control of the epidemic Methods Data of the close contacts of COVID-19 in Xi'an was collected We analyzed the distribution of close contacts in the population and isolation measures of close contacts and confirmed cases among different exposure conditions Results By 0:00 February 28, the cumulative number of confirmed cases and close contacts in Xi'an had been 120 and 5241,respectively Medical workers accounted for 7 92% of the close contacts Across different age groups, the proportion of the youth group was the highest (56%) Indifferent areas of Xi'an, Yanta District had the largest number of close contacts(913) while Huyi District had the lowest number (29) The main contact route was contact within the family (1875) The majority of the confirmed cases were infected within the family (35), followed by shopping places (26) Conclusion By 0:00 February 28, close contacts of COVID-19 in Xi'an had mostly been found in Yanta District The young constituted the main group, and close contacts within the family had a high risk of infection In view of the above characteristics, it is necessary to improve the screening of people having close contact with COVID-19 in key areas and populations
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