Influenza is an infectious disease of the respiratory system subject to constant monitoring in terms of the number of new cases and deaths. It was observed that the number of new cases of influenza decreased in the Silesian voivodeship in the second half of March 2020, and it was decided to verify whether it is related to the emergence of a new threat, which is the COVID pandemic. In the descriptive model of the study, the trend of influenza morbidity and hospitalization was analyzed, and at the same time the dynamics of the increase in new SARS-CoV-2 infections was presented. Chronological systematization of important administrative activities limiting development of the epidemic was also carried out. It cannot be ruled out that the observed decrease in the incidence and hospitalization due to influenza in the province of Silesia is related to the restrictive regulations on the organization of work and social life taken to minimize the COVID epidemic. Unambiguous conclusions will require in-depth research and a longer observation period.