Why do flu shots weaken with age? new study aims to find out
Knowledge-focused
Ongoing
This study follows 75 adults aged 65 and older over three to four flu seasons to learn why the flu vaccine becomes less effective as people age. Participants will receive a different FDA-approved flu vaccine each year, and researchers will collect blood, nasal swab, and stool sam…
Phase: PHASE4 • Sponsor: The Jackson Laboratory • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:28 UTC