FDA & Government News

Flu Vaccine Cut Hospitalizations Despite Drifted H3N2 Strain

Interim CDC estimates found the 2025–2026 vaccine reduced outpatient influenza visits by up to 41% and hospitalizations by up to 41%.

Share

The 2025–2026 seasonal influenza vaccine provided significant protection, reducing outpatient visits by 22% to 34% and hospitalizations by 30%, with higher efficacy observed in pediatric patients (38% to 41%). Data from over 142,000 patients highlighted notable effectiveness variations against different influenza strains, particularly for influenza B. The study adjusted for multiple confounders and found overall vaccine effectiveness consistent with international estimates. Despite some limitations in data, the authors emphasized the importance of vaccination and antiviral treatments in mitigating influenza morbidity.

Original Source(s)

Flu Vaccine Cut Hospitalizations Despite Drifted H3N2 Strain

  • by Kerri Miller

  • March 17, 2026

Related Content

Why Right Atrial Pressure May Matter More Than Circulatory Filling Pressure

Review highlights physiologic roles of circulatory filling pressures while questioning the clinical value of measuring them directly.

Not All COPD Is Smoking-Related

Study compares symptoms, spirometry, and inflammatory markers with smoking-related disease.

Singing Program Feasible After Pulmonary Rehabilitation

Study finds 12-week singing intervention feasible following pulmonary rehabilitation, supporting larger trial.