A higher-dose flu shot could spare millions of older adults a hospital stay

MedicalXpress | 六月 12, 2026

Influenza is a seasonal condition that causes coughing, sneezing, mild fever and aches in most cases. However, it can sometimes take a serious turn, leading to hospitalization, especially for young children, adults over 65 and pregnant people. A recent study published in JAMA Network Open examined whether the high-dose inactivated influenza vaccine (HD-IIV), which contains four times as much antigen as the standard dose, offers superior protection against hospitalization and death.