This is a line chart comparing childhood flu vaccination coverage across flu seasons from 2019–2020 through 2024–2025. Vaccination rates typically start around 18–20% in early October and rise steadily through winter. Earlier seasons such as 2019–2020 and 2020–2021 peak above 60% by spring, while more recent years plateau lower. The 2024–2025 season shows the weakest uptake, stalling below 50% through April.