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| Epidemiological characteristics of pertussis in Huzhou City from 2012 to 2022 |
| LIU Yan1, SHEN Jianyong2, ZHANG Chao2, SUN Xiuxiu1, WANG Yuda1, ZHENG Jiayi1, ZHANG Zizhe1
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1. Department of Infectious Disease Control and Prevention, Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang 313000, China;
2. Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang 313000, China |
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Abstract Objective To analyze the epidemiological characteristics of pertussis in Huzhou City, Zhejiang Province from 2012 to 2022, so as to provide insights into formulation of pertussis control measures. Methods The data of reported pertussis cases in Huzhou City from 2012 to 2022 were collected through the Infectious Disease Report Information System of Chinese Disease Prevention and Control Information System. The temporal, spatial and population distributions of pertussis cases in Huzhou City from 2012 to 2022 were analyzed using a descriptive epidemiological method. Results A total of 499 pertussis patients were reported in Huzhou City from 2012 to 2022, with mean annual reported incidence of 1.508/105, and no death was reported. The reported incidence of pertussis remained at a low level in Huzhou City from 2012 to 2021, all below 1/105, and increased to 12.625/105 in 2022. The reported incidence of pertussis appeared an overall tendency towards a rise in Huzhou City from 2012 to 2021 (Z=-29.261, P<0.001). The incidence of pertussis peaked from June to July, and a relatively higher incidence rate of pertussis was reported in Deqing (6.359/105) and Anji counties (1.725/105), while higher incidence was found among children at ages of <1 year (30.566/105), 4 years (31.896/105) and 5 years (29.485/105). Conclusions The reported incidence of pertussis was at a low level in Huzhou City from 2012 to 2021, and increased sharply in 2022. The incidence of pertussis peaked from June to July, was concentrated in Deqing and Anji counties and higher among infants under one year of age and preschool children at ages of 4 to 5 years.
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Received: 10 April 2023
Revised: 21 May 2023
Published: 06 September 2023
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