2017—2019年温州地区甲型和乙型流感的流行病学特征分析

doi:10.3969/j.issn.1006-5253.2021.03.014

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Abstract Objective To understand the epidemic situation of influenza A and influenza B in Wenzhou from 2017 to 2019. Methods The throat swabs and clinical data of influenzalike cases from January 2017 to December 2019 in two hospitals in Wenzhou were collected to analyze the number of influenza-like cases and the detection rate of influenza-like cases by gender, age, month and year. Results The number of influenza like cases received from 2017 to 2019 was 32 097, including 2 355 cases (7.3%) in 2017, 8 177 cases (25.5%) in 2018 and 21 565 cases (67.2%) in 2019. The detection rates in 2017, 2018 and 2019 were 44.4%, 35.8% and 39.7% respectively. The detection rates of influenza A were 6.6%, 15.5% and 27.2%, respectively, showing an increasing trend year by year. The detection rate of influenza B was 37.8%, 20.3% and 12.4%, respectively, which decreased year by year. There were 16 750 males (52.1%) and 15 347 females (47.9%) in 32 097 cases of influenza like diseases. From 2017 to 2019, the total detection rate of men was higher than that of women (P<0.001), and the detection rate of influenza A in men was higher than that in women (P<0.001). There was no significant difference between male and female (P=0.408). The age group of 4 to <7 years old and group of 7 to <19 years old were the main groups of influenza epidemic. The highest detection rate was found in the 7 to <19 age group, and the detection rates from 2017 to 2019 were 53.1%, 43.7% and 49.4% respectively. From 2017 to 2019, influenza epidemics were mainly distributed in January, February, March and December, and influenza A and B alternated. Conclusion From 2017 to 2019, influenza A and influenza B alternated in Wenzhou, and winter and spring were the peak periods of influenza; men are more likely to be infected with influenza A than women; The age group of 7 to <19 years old is the main group of influenza, which suggests that the prevention and control of influenza in campus should be done well.

Key words： influenza A influenza B influenza like case detection rate

Received: 07 March 2021

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	Articles by authors
	Zhou Wangzhan
	He Wei
	Hu Yunshuang
	Zhao Feng
	Huang Jianfang

Cite this article:

Zhou Wangzhan,He Wei,Hu Yunshuang, et al. Analysis of the epidemiological characteristics of influenza A and B in Wenzhou from 2017 to 2019[J]. journal1, 2021, 28(3): 254-258.

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http://manu58.magtech.com.cn/Jwk_zgyytj/EN/10.3969/j.issn.1006-5253.2021.03.014 OR http://manu58.magtech.com.cn/Jwk_zgyytj/EN/Y2021/V28/I3/254

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