Fluad vs. Fluzone High-Dose Vaccine Effectiveness Among Adults ≥65 Years
Recruiting
This study will evaluate the relative vaccine effectiveness of quadrivalent adjuvanted inactivated influenza vaccine (aIIV4) versus quadrivalent high-dose inactivated influenza vaccine (HD-IIV4) in preventing polymerase chain reaction (PCR)-confirmed influenza and influenza-related outcomes in adults ≥65 years of age during the 2023/24 and 2024/25 influenza seasons. The study is an observational study conducted at Kaiser Permanente Northern California (KPNC), an integrated health care system in... Read More
Gender:
ALL
Ages:
65 years and above
Trial Updated:
09/01/2023
Locations: Kaiser Permanente Northern California (entire region), Oakland, California
Conditions: Influenza, Community-acquired Pneumonia, Cardiovascular Events