Epidemiological characteristics and related factors of varicella public health emergency events in primary schools of Nanning City from 2014 to 2023

LIANG Xianan; LIANG Changwei; XU Bin; YANG Shixiong; LIANG Xiaoyun; PAN Lihua; XIE Yihong

doi:10.16462/j.cnki.zhjbkz.2024.11.008

Volume 28 Issue 11

Nov. 2024

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LIANG Xianan, LIANG Changwei, XU Bin, YANG Shixiong, LIANG Xiaoyun, PAN Lihua, XIE Yihong. Epidemiological characteristics and related factors of varicella public health emergency events in primary schools of Nanning City from 2014 to 2023[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2024, 28(11): 1287-1294. doi: 10.16462/j.cnki.zhjbkz.2024.11.008

Citation:

LIANG Xianan, LIANG Changwei, XU Bin, YANG Shixiong, LIANG Xiaoyun, PAN Lihua, XIE Yihong. Epidemiological characteristics and related factors of varicella public health emergency events in primary schools of Nanning City from 2014 to 2023[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2024, 28(11): 1287-1294. doi: 10.16462/j.cnki.zhjbkz.2024.11.008

Citation:

LIANG Xianan, LIANG Changwei, XU Bin, YANG Shixiong, LIANG Xiaoyun, PAN Lihua, XIE Yihong. Epidemiological characteristics and related factors of varicella public health emergency events in primary schools of Nanning City from 2014 to 2023[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2024, 28(11): 1287-1294. doi: 10.16462/j.cnki.zhjbkz.2024.11.008

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Epidemiological characteristics and related factors of varicella public health emergency events in primary schools of Nanning City from 2014 to 2023

doi: 10.16462/j.cnki.zhjbkz.2024.11.008

1.
Department of Epidemiology and Health Statistics, School of Public Health, Guangxi Medical University, Nanning 530021, China
2.
Infectious Disease Prevention and Control Section, Nanning Center for Disease Control and Prevention, Nanning 530023, China
3.
Academician Workstation of the Fourth People′s Hospital of Nanning, Nanning 530023, China

Funds:

Guangxi Zhuang Autonomous Region Health Commission Self-funded Research Project Z20211324

More Information

Corresponding author: XIE Yihong, E-mail: gxxieyihong@163.com
Received Date: 2024-04-24
Rev Recd Date: 2024-08-31

Available Online: 2024-12-23

Publish Date: 2024-11-10

Abstract

Abstract

Objective This study aimed to analyze the epidemiological characteristics and related factors of varicella public health emergency events (PHEEs) in primary schools in Nanning City from 2014 to 2023, offering scientific insights for the prevention and control of varicella outbreaks in schools. Methods Utilizing the China information system for disease control and prevention, we collected data on varicella cases and PHEEs in primary schools. The moving average warning method identified varicella epidemic periods. Descriptive epidemiology was applied to characterize these PHEEs. We employed stepwise approaches to construct multiple linear regression models, focusing on the factors associated with the duration of varicella outbreaks, the frequency of PHEEs, and the total number of cases during each epidemic period. Results Between 2014 and 2023, Nanning City reported 116 varicella PHEEs in primary schools, predominantly occurring during the winter and spring epidemic periods (66.38%). No significant differences were observed in the median duration (H=1.62, P=0.204) and case numbers across various epidemic periods(H=1.69, P=0.194). The overall incidence rate in rural primary schools was significantly higher at 5.82%, compared to other school types (χ² =646.04, P < 0.001). County-town primary schools experienced the longest epidemic duration (F=4.02, P=0.021), highest average number of cases per outbreak (F=4.54, P=0.013), and the greatest involvement of classes (F=9.36, P < 0.001). Urban primary schools had the highest number of people affected (F=28.06, P < 0.001). The duration of varicella PHEEs was significantly influenced by the initial case numbers reported (β=0.84, P=0.006), the number of cases per outbreak (β=0.16, P=0.048), and the number of classes involved (β=1.21, P=0.004). Furthermore, the total number of PHEEs and total case numbers during an epidemic period were positively associated with the duration of the first outbreak (β=0.08, P=0.029; β=6.16, P=0.001) and negatively with the average interval time between outbreaks (β=-0.21, P < 0.001; β=-8.14, P=0.001). Conclusions Heightened focus on varicella prevention and control in primary schools is essential, especially during epidemic periods. Enhancing the sensitivity of school-based varicella outbreak monitoring and reducing transmission between classes can shorten the duration of PHEEs. Strengthening the recognition of abnormal signals during the epidemic, such as the duration of the first outbreak and the interval between outbreaks, is crucial for the timely assessment of the overall outbreak level.
- Varicella,
- Primary school,
- Public health emergency event,
- Epidemic period

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References(17)

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