The influence of COVID-19 prevention and control measures on the epidemic of influenza in Huzhou
10.19485/j.cnki.issn2096-5087.2021.04.002
- Author:
LIU Yan
;
JIN Mei Hua
;
SHEN Jian Yong
;
LIU Guang Tao
;
FU Yun
;
YANG Zhong Rong
;
REN Fei Lin
;
XU De Shun
- Publication Type:Journal Article
- Keywords:
influenza coronavirus disease 2019 influenza-like illness prevention and control measures
- From:
Journal of Preventive Medicine
2021;33(4):332-336
- CountryChina
- Language:Chinese
-
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.
- Full text: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.pdf
