Epidemiological characteristics of influenza in Fuling district of Chongqing of China in 2010-2019
10.3760/cma.j.issn.1008-6706.2022.04.024
- VernacularTitle:重庆市涪陵区2010-2019年流行性感冒流行特征分析
- Author:
Xiaoli KANG
1
;
Yu XIANG
;
Lei FENG
;
Yiyao CHEN
;
Hong PAN
;
Qiaolei LIU
;
Deming YANG
Author Information
1. 重庆市涪陵区疾病预防控制中心检验科，重庆 408000
- Keywords:
Influenza,human;
Influenza - like illness( ILI );
Epidemiologic studies;
Pathogen;
Epidemiologic characteristics;
Surveillance;
Influenza virus;
Nucleic acid
- From:
Chinese Journal of Primary Medicine and Pharmacy
2022;29(4):584-589
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the characteristics and change law of influenza in Fuling District of Chongqing in 2010-2019, and to provide a scientific basis for the pre-control of influenza.Methods:We performed an epidemiological analysis on the data of influenza-like illness reported by Fuling District influenza surveillance sentinel hospitals in Chongqing in 2010-2019.Results:In 2010-2019, a total of 42 169 cases of influenza-like illness were reported in Fuling District, with an average treatment rate of 1.22%. The activity of influenza-like illness peaked in winter, spring, and summer. There were 22 788 cases in the group of cases aged < 5 years, accounting for 50.4%. In 2010-2019, a total of 8049 pharyngeal swabs were collected to screen for influenza-like illness, with a positive rate of 14.52%. Influenza virus A H3 positive rate was highest, accounting for 37.98%, followed by influenza virus B BV positive rate, accounting for 30.80%. The highest influenza virus-positive rate was reported in January (26.34%), followed by November (24.85%).Conclusion:Influenza in the Fuling district of Chongqing mainly occurs in winter, spring, and summer. Influenza virus A H3 is the dominant strain. Children and school students are prone to develop influenza-like illnesses. We should continue to strengthen the monitoring of influenza strains, greatly promote vaccination, and strengthen the monitoring and prevention of influenza-like illness among susceptible populations.
