| [Abstract] Objective Analysis the intensity and characteristics of influenza epidemic in Anqing before and after 2 years in COVID-19. Methods?In the “China influenza surveillance information system”, monitoring the data of Anqing city from 2019 to 2021 were selected to analyze the changes in the percentage of influenza- like cases, the positive rate of etiology, and the aggregated epidemic situation before and after the occurrence of COVID-19. Results?In 2 years before and after the COVID-19，the percentages of influenza- like cases were 4.17% and 3.786%, respectively, and the difference was statistically significant（χ2=56.652，P=0.000）. Simultaneously, the positive rates of etiology were 23.43% and 1.15%, and the difference was statistically significant (χ2=538.69, P=0.000). The virus activity showed bimodal distribution before the COVID-19 outbreak, and only 27 positive samples were detected in the whole year after the COVID-19. Conclusions?Strict non-drug preventive measures during the COVID-19 epidemic have an important influence on the seasonal characteristics of influenza. Influenza prevention and control should be done well through vaccination, non-drug prevention. |