A Phase 3 Randomized, Observer-Blind, Controlled Study to Evaluate the Clinical Efficacy of an mRNA Based Seasonal Influenza Vaccine in Older Adults ≥65 Years of Age

Inclusion Criteria: 1. Participants who, in the opinion of the investigator, can and will comply with the requirements of the protocol independently or with the assistance of a caregiver. 2. Written or witnessed (physically or digitally) informed consent obtained from the participant/Legally acceptable representative \[LAR(s)\] of the participant prior to performance of any study-specific procedure. 3. Healthy participants or medically stable patients as established by medical history and clinical examination. Participants with chronic medical conditions with or without specific treatment are…