Vaccin grippal quadrivalent (virion fragmenté, inactivé), 60 microgrammes HA /souche, JNJ-78901563 clinical trials

A Phase 3 Randomized Double-blind Controlled Study to Evaluate the Immunogenicity, Safety, and Reactogenicity of ExPEC9V and High-dose Quadrivalent Influenza Vaccine, With and Without Co-administration, in Adults Aged 65 Years or Older

This study looks at a new vaccine to prevent serious E. coli infections and a strong flu vaccine in people aged 65 and over. Researchers want to see how well they work, how safe they are, and if they can be given together.