Globenewswire·2025-10-20 05:00Core Insights - Sanofi's high-dose influenza vaccine, Efluelda (Fluzone High-Dose in North America), shows significantly reduced hospitalization risk for adults aged 65 and older compared to standard-dose vaccines, as evidenced by the FLUNITY-HD study [1][4][3] Study Design and Results - The FLUNITY-HD study is the largest of its kind, involving nearly half a million participants across multiple seasons and geographic areas, demonstrating the effectiveness of the high-dose vaccine [4][6] - The study found a 31.9% additional reduction in laboratory-confirmed influenza hospitalizations for older adults receiving the high-dose vaccine compared to standard-dose [4][7] - Additional findings include an 8.8% reduction in pneumonia/influenza hospitalizations and a 6.3% reduction in hospitalizations due to cardio-respiratory events [4][7] Public Health Implications - The high-dose vaccine could prevent one all-cause hospitalization for every 515 older adults vaccinated, highlighting its potential to improve quality of life for vulnerable seniors and reduce healthcare costs [3][4] - The results may influence public health strategies and clinical guidelines, reinforcing the importance of high-dose vaccines for older adults [2][3] Product Information - Efluelda is specifically designed for adults aged 60 and older in Europe and for those aged 65 and older in North America, providing four times the antigen compared to standard-dose vaccines [8][9] - The vaccine aims to enhance immune response in older adults, who are at a higher risk for severe influenza-related illnesses [9]