Analysis of epidemic and etiological characteristics of influenza-like cases in Hefei City from 2015 to 2020

LI Ying-qing; LIU Xu-xiang; ZHAO Ke-fu; HU Cheng-yang; ZHANG Kang-di; CHENG Xin; WANG Jie; YU Wen-jie; WANG Xin-qiang; HOU Sai; ZHANG Xiu-jun

doi:10.16462/j.cnki.zhjbkz.2021.12.017

Volume 25 Issue 12

Dec. 2021

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Article Navigation > CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION > 2021 > 25(12): 1453-1458

LI Ying-qing, LIU Xu-xiang, ZHAO Ke-fu, HU Cheng-yang, ZHANG Kang-di, CHENG Xin, WANG Jie, YU Wen-jie, WANG Xin-qiang, HOU Sai, ZHANG Xiu-jun. Analysis of epidemic and etiological characteristics of influenza-like cases in Hefei City from 2015 to 2020[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2021, 25(12): 1453-1458. doi: 10.16462/j.cnki.zhjbkz.2021.12.017

Citation:

LI Ying-qing, LIU Xu-xiang, ZHAO Ke-fu, HU Cheng-yang, ZHANG Kang-di, CHENG Xin, WANG Jie, YU Wen-jie, WANG Xin-qiang, HOU Sai, ZHANG Xiu-jun. Analysis of epidemic and etiological characteristics of influenza-like cases in Hefei City from 2015 to 2020[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2021, 25(12): 1453-1458. doi: 10.16462/j.cnki.zhjbkz.2021.12.017

Citation:

LI Ying-qing, LIU Xu-xiang, ZHAO Ke-fu, HU Cheng-yang, ZHANG Kang-di, CHENG Xin, WANG Jie, YU Wen-jie, WANG Xin-qiang, HOU Sai, ZHANG Xiu-jun. Analysis of epidemic and etiological characteristics of influenza-like cases in Hefei City from 2015 to 2020[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2021, 25(12): 1453-1458. doi: 10.16462/j.cnki.zhjbkz.2021.12.017

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Analysis of epidemic and etiological characteristics of influenza-like cases in Hefei City from 2015 to 2020

doi: 10.16462/j.cnki.zhjbkz.2021.12.017

1.
Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei 230032, China
2.
Health Emergency Office, Hefei Center for Disease Control and Prevention, Hefei 230061, China
3.
Department of Humanities and Medicine, School of Humanities and Medicine, Anhui Medical University, Hefei 230032, China
4.
Department of Health Emergency Management and Acute Infections Diseases Prevention, Anhui Province Center for Disease Control and Prevention, Hefei 230601, China

Funds:

National Natural Science Foundation of China 82073565

Natural Science Foundation of Anhui Province 2008085MH263

More Information

Corresponding author: ZHANG Xiu-jun, E-mail: zhangxiujun@ahmu.edu.cn
Received Date: 2020-12-30
Rev Recd Date: 2021-02-26

Available Online: 2021-12-27

Publish Date: 2021-12-10

Abstract

Abstract

Objective To explore the activity level and epidemic dynamics of influenza in Hefei City from 2015 to 2019, and to provide scientific basis for the prevention and control of influenza in the future. Methods Data of daily influenza-like illness (ILI) cases and corresponding etiological surveillance information were collected from "China Influenza Surveillance Information System" to analyze the influenza epidemic from 2015 to 2019 in Hefei City. Results A total of 183 789 ILI cases were reported in 3 sentinel hospitals in Hefei City from 2015 to 2019, accounting for 5.06% of the total number of outpatients visits and emergency departments visits. The peak of ILI cases was mainly from November of the current year to April of the following year, and the difference of positive rate in different months was statistically difference (χ²=484.793, P < 0.001). The laboratory received a total of 17 442 samples, of which 4 925 were positive, which accounting for 28.24% of the total number of samples submitted for inspection. The high positive rate was from December to April of the following year, and there was statistically different in different months (χ²=2 567.306, P < 0.001). Besides, the main subtype of influenza viruses was Victoria and H3 types. There was a positive correlation between the prevalence of ILI and the positive rate of etiology(r=0.491, P=0.021). Conclusions The influenza epidemic peaked in winter and summer from 2015 to 2019, and there was a mixed epidemic of influenza virus subtypes.
- Influenza,
- Influenza-like cases,
- Influenza surveillance

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References(15)

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