Abstract:Objective To evaluate the impact of coronavirus disease 2019 ( COVID-19 ) prevention and control measures in Huzhou on influenza epidemic strength and characteristics in 2020, so as to provide reference for formulating influenza prevention measures. Methods Using the influenza surveillance data of the national influenza sentinel surveillance system from January 2015 to July 2020, the seasonal characteristics of influenza epidemic were analyzed, the proportion of influenza-like illness cases ( ILI% ) and the positive rate of influenza virus in January to July of 2020 were compared with those of the same period in 2015-2019, in order to evaluate the impact of COVID-19 prevention and control measures. Results The ILI% and the positive rate of influenza virus in Huzhou were 3.90% and 15.32% during 2015-2019, while were 4.41% and 12.63% from January to July of 2020. The trends of ILI% during 2015-2019 fluctuated similar, but continued to drop since January 2020. The positive rate of influenza virus peaked from December to March in 2015-2019, also peaked from December 2019 to January 2020, but decreased to 0 in March. ILI% was positively correlated with the positive rate of influenza virus ( r=0.682, P<0.05). The growth rates of ILI% from January to July 2020 were 4.75%, -11.27%, 0.68%, 19.84% and 0.92%, compared with the same period of 2015-2019, respectively. The growth rates of ILI% in January 2020 were much higher ( >57.00% ) and from April to July were much lower ( <-33.00% ) . The growth rates of influenza virus positive rate from January to July 2020 were -47.96%, -36.53%, -3.44%, -35.92% and -39.37%, compared to the same period of 2015-2019, respectively. The growth rates of influenza virus positive rate in January 2020 were much higher ( >11.00% ) and from February to March were much lower ( <-61.00% ). Conclusion Since COVID-19 prevention and control measures were implemented in January 2020 in Huzhou, the ILI% and the positive rate of influenza virus in sentinel hospitals decreased significantly.
刘艳, 金玫华, 沈建勇, 刘光涛, 付云, 杨中荣, 任飞林, 徐德顺. 新型冠状病毒肺炎疫情防控措施对湖州市流行性感冒流行特征的影响[J]. 预防医学, 2021, 33(4): 332-336.
LIU Yan, JIN Meihua, SHEN Jianyong, LIU Guangtao, FU Yun, YANG Zhongrong, REN Feilin, XU Deshun. The influence of COVID-19 prevention and control measures on the epidemic of influenza in Huzhou. Preventive Medicine, 2021, 33(4): 332-336.
[1] 金玫华,沈建勇,付云,等.湖州市新型冠状病毒肺炎病例流行特征分析[J]. 预防医学,2020,32(5):433-436. [2] BRANKSTON G,GITTERMAN L,HIRJI Z,et al.Transmission of influenza A in human beings[J]. Lancet Infect Dis,2007,7(4):257-265. [3] TOKARS J I,OLSEN S J,REED C.Seasonal incidence of symptomatic influenza in the United States[J]. Clin Infect Dis,2018,66(10):1511-1518. [4] OZARAS R,CIRPIN R,DURAN A,et al.Influenza and COVID-19 coinfection:report of six cases and review of the literature[J]. J Med Virol,2020,92(11):2657-2665. [5] MOORTHY M,CASTRONOVO D,ABRAHAM A,et al.Deviations in influenza seasonality:odd coincidence or obscure consequence?[J]. Clin Microbiol Infect,2012,18(10):955-962. [6] 陈莉萍,徐德顺,纪蕾,等. 2010年—2016年湖州市流感监测结果分析[J]. 中国卫生检验杂志,2018,28(11):1372-1374. [7] 王大燕. 中国流感监测网络的发展与展望[J]. 中华流行病学杂志,2018,39(8):1036-1040. [8] OLSEN S J,AZZIZ-BAUMGARTNER E,BUDD A P,et al.Decreased influenza activity during the COVID-19 pandemic - United States,Australia,Chile,and South Africa,2020[J]. Am J Transplant,2020,20(12):3681-3685. [9] 王轶,何雩霏,罗伟平,等. 应对新型冠状病毒(COVID-19)肺炎的政府干预对医院流行性感冒检测阳性率的影响[J]. 广州医药,2020,51(3):1-4,20. [10] SOO R J J,CHIEW C J,MA S,et al.Decreased influenza incidence under COVID-19 control measures,Singapore[J]. Emerging infect Diseases,2020,26(8):1933-1935. [11] WONG N S,LEUNG C C,LEE S S.Abrupt subsidence of seasonal influenza after COVID-19 outbreak,Hong Kong,China[J]. Emerg Infect Dis,2020,26(11):2753-2755. [12] KUO S C,SHIH S M,CHIEN L H,et al.Collateral benefit of COVID-19 control measures on influenza activity,Taiwan[J]. Emerg Infect Dis,2020,26(8):1928-1930. [13] MELIDOU A,PEREYASLOV D,HUNGNES O,et al. Virological surveillance of influenza viruses in the WHO European Region in2019/20-impact of the COVID-19 pandemic[J/OL]. Euro surveill,2020,25(46)[2021-01-20]. https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2020.25.46.2001822. [14] LEI H,XU M,WANG X,et al.Nonpharmaceutical interventions used to control COVID-19 reduced seasonal influenza transmission in China[J]. J Infect Dis,2020,222(11):1780-1783. [15] GROHSKOPF L A,ALYANAK E,BRODER K R,et al.Prevention and control of seasonal influenza with vaccines:recommendations of the advisory committee on immunization practices - United States,2020-21 influenza season[J]. MMWR Recomm Rep,2020,69(8):1-24. [16] CUADRADO-PAYÁN E,MONTAGUD-MARRAHI E,TORRES-ELORZA M,et al. SARS-CoV-2 and influenza virus co-infection[J/OL]. Lancet,2020,395(10236) [2021-01-20]. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200126/. DOI:10.1016/S0140-6736(20)31052-7. [17] YUN J W,CHOI M J, SHIN G S,et al. Cost-effectiveness of influenza vaccine strategies for the elderly in South Korea[J/OL]. PLoS One,2019,14(1)[2021-01-20]. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0209643. [18] 朱瑶,韦意娜,孙畅,等.新型冠状病毒肺炎疫苗研究进展[J]. 预防医学,2021,33(2):143-148.