A line chart showing cumulative estimated U.S. flu-related hospitalizations for the 2024-25 flu season. As of Feb. 8, 2025, it's estimated that between 370k and 820k people have been hospitalized in total. For comparison, the highest total number in recent years was the 2017-18 season, with 709k total hospitalizations. The lowest was the 2021-22 season, with 124k hospitalizations.