in people 60 years and older. rsv can severely affect the lungs and lower airways. arexvy is proven to be over 82% effective in preventing lower respiratory disease from rsv and over 94% effective in those with these health conditions. ( ♪ ) arexvy does not protect everyone and is not for those with severe allergic reactions to its ingredients. those with weakened immune systems may have a lower response to the vaccine. the most common side effects are injection site pain, fatigue, muscle pain, headache, and joint pain. rsv can be serious. talk to your doctor or pharmacist about arexvy today. rsv? make it arexvy.