This study examines the impact of the COVID-19 pandemic on the circulation patterns of respiratory viruses, specifically influenza and respiratory syncytial virus (RSV), by comparing their peak timing and duration during the first three SARS-CoV-2 seasons to pre-pandemic times. Data from 194 countries over 2014-2023 were analyzed using the Global Influenza Surveillance and Response System (GISRS). The results show that in the 2022/2023 season, the northern hemisphere experienced earlier influenza and RSV peaks by 4 months, with a 2.2-week increase in the duration of influenza epidemics. The southern hemisphere's influenza peak shift was not significant, while the intertropical regions saw a reduction in the duration of human metapneumovirus and adenovirus epidemics. These findings highlight the need for robust surveillance data to inform public health strategies and adapt to evolving viral dynamics. The study emphasizes the importance of continued monitoring to determine whether the observed changes are temporary or long-lasting.This study examines the impact of the COVID-19 pandemic on the circulation patterns of respiratory viruses, specifically influenza and respiratory syncytial virus (RSV), by comparing their peak timing and duration during the first three SARS-CoV-2 seasons to pre-pandemic times. Data from 194 countries over 2014-2023 were analyzed using the Global Influenza Surveillance and Response System (GISRS). The results show that in the 2022/2023 season, the northern hemisphere experienced earlier influenza and RSV peaks by 4 months, with a 2.2-week increase in the duration of influenza epidemics. The southern hemisphere's influenza peak shift was not significant, while the intertropical regions saw a reduction in the duration of human metapneumovirus and adenovirus epidemics. These findings highlight the need for robust surveillance data to inform public health strategies and adapt to evolving viral dynamics. The study emphasizes the importance of continued monitoring to determine whether the observed changes are temporary or long-lasting.