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[Epidemiological investigation on the local epidemic situation in Zhengzhou High-Tech Zone caused by SARS-CoV-2 Delta variant].
Zhonghua Yu Fang Yi Xue Za Zhi. 2023 Jan 06; 57(1):43-47.ZY

Abstract

This study collected epidemic data of COVID-19 in Zhengzhou from January 1 to January 20 in 2022. The epidemiological characteristics of the local epidemic in Zhengzhou High-tech Zone caused by the SARS-CoV-2 Delta variant were analyzed through epidemiological survey and big data analysis, which could provide a scientific basis for the prevention and control of the Delta variant. In detail, a total of 276 close contacts and 599 secondary close contacts were found in this study. The attack rate of close contacts and secondary close contacts was 5.43% (15/276) and 0.17% (1/599), respectively. There were 10 confirmed cases associated with the chain of transmission. Among them, the attack rates in close contacts of the first, second, third, fourth and fifth generation cases were 20.00% (5/25), 17.86% (5/28), 0.72% (1/139) and 14.81% (4/27), 0 (0/57), respectively. The attack rates in close contacts after sharing rooms/beds, having meals, having neighbor contacts, sharing vehicles with the patients, having same space contacts, and having work contacts were 26.67%, 9.10%, 8.33%, 4.55%, 1.43%, and 0 respectively. Collectively, the local epidemic situation in Zhengzhou High-tech Zone has an obvious family cluster. Prevention and control work should focus on decreasing family clusters of cases and community transmission.

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Authors+Show Affiliations

Jin YF
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Li Y
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Li JW
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Yan ZY
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Chen SY
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Lou XM
Department of Maternal, Child and Adolescent Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Fan K
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Wu F
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Cao YY
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Hu FY
Zhengzhou High-tech Zone Center for Disease Control and Prevention,Zhengzhou 450001, China.
Chen L
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Xie YQ
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Cheng C
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Yang HY
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.
Duan GC
Department of Epidemiology, College of Public Health, Zhengzhou University, Zhengzhou 450001, China.

MeSH

HumansSARS-CoV-2COVID-19EpidemicsIncidence

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

36655256

Citation

Jin, Y F., et al. "[Epidemiological Investigation On the Local Epidemic Situation in Zhengzhou High-Tech Zone Caused By SARS-CoV-2 Delta Variant]." Zhonghua Yu Fang Yi Xue Za Zhi [Chinese Journal of Preventive Medicine], vol. 57, no. 1, 2023, pp. 43-47.
Jin YF, Li Y, Li JW, et al. [Epidemiological investigation on the local epidemic situation in Zhengzhou High-Tech Zone caused by SARS-CoV-2 Delta variant]. Zhonghua Yu Fang Yi Xue Za Zhi. 2023;57(1):43-47.
Jin, Y. F., Li, Y., Li, J. W., Yan, Z. Y., Chen, S. Y., Lou, X. M., Fan, K., Wu, F., Cao, Y. Y., Hu, F. Y., Chen, L., Xie, Y. Q., Cheng, C., Yang, H. Y., & Duan, G. C. (2023). [Epidemiological investigation on the local epidemic situation in Zhengzhou High-Tech Zone caused by SARS-CoV-2 Delta variant]. Zhonghua Yu Fang Yi Xue Za Zhi [Chinese Journal of Preventive Medicine], 57(1), 43-47. https://doi.org/10.3760/cma.j.cn112150-20220315-00247
Jin YF, et al. [Epidemiological Investigation On the Local Epidemic Situation in Zhengzhou High-Tech Zone Caused By SARS-CoV-2 Delta Variant]. Zhonghua Yu Fang Yi Xue Za Zhi. 2023 Jan 6;57(1):43-47. PubMed PMID: 36655256.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Epidemiological investigation on the local epidemic situation in Zhengzhou High-Tech Zone caused by SARS-CoV-2 Delta variant]. AU - Jin,Y F, AU - Li,Y, AU - Li,J W, AU - Yan,Z Y, AU - Chen,S Y, AU - Lou,X M, AU - Fan,K, AU - Wu,F, AU - Cao,Y Y, AU - Hu,F Y, AU - Chen,L, AU - Xie,Y Q, AU - Cheng,C, AU - Yang,H Y, AU - Duan,G C, PY - 2023/1/19/entrez PY - 2023/1/20/pubmed PY - 2023/1/20/medline SP - 43 EP - 47 JF - Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] JO - Zhonghua Yu Fang Yi Xue Za Zhi VL - 57 IS - 1 N2 - This study collected epidemic data of COVID-19 in Zhengzhou from January 1 to January 20 in 2022. The epidemiological characteristics of the local epidemic in Zhengzhou High-tech Zone caused by the SARS-CoV-2 Delta variant were analyzed through epidemiological survey and big data analysis, which could provide a scientific basis for the prevention and control of the Delta variant. In detail, a total of 276 close contacts and 599 secondary close contacts were found in this study. The attack rate of close contacts and secondary close contacts was 5.43% (15/276) and 0.17% (1/599), respectively. There were 10 confirmed cases associated with the chain of transmission. Among them, the attack rates in close contacts of the first, second, third, fourth and fifth generation cases were 20.00% (5/25), 17.86% (5/28), 0.72% (1/139) and 14.81% (4/27), 0 (0/57), respectively. The attack rates in close contacts after sharing rooms/beds, having meals, having neighbor contacts, sharing vehicles with the patients, having same space contacts, and having work contacts were 26.67%, 9.10%, 8.33%, 4.55%, 1.43%, and 0 respectively. Collectively, the local epidemic situation in Zhengzhou High-tech Zone has an obvious family cluster. Prevention and control work should focus on decreasing family clusters of cases and community transmission. SN - 0253-9624 UR - https://www.unboundmedicine.com/medline/citation/36655256/[Epidemiological_investigation_on_the_local_epidemic_situation_in_Zhengzhou_High_Tech_Zone_caused_by_SARS_CoV_2_Delta_variant]_ DB - PRIME DP - Unbound Medicine ER -