Impacts of delayed influenza vaccination on clinical outcomes in ICU-admitted patients with influenza: A retrospective cohort study

Key Points

• Delayed influenza vaccination increases the risk of severe clinical outcomes in ICU-admitted patients.
• Among ICU patients with influenza, those vaccinated later have notably longer hospital stays.
• This retrospective cohort study assessed clinical outcomes of influenza in an intensive care setting.
• These findings highlight the need for timely influenza vaccination to improve patient outcomes.