Vaccine efficacy? Vaccine effectiveness? Ein kluger Beitrag von Vinay Prasad

So much confusion about Vaccine Efficacy vs. Effectiveness

For transmission/ mild symptoms/ severe disease/ hospitalization/ death

I clarify these concepts; relevant to kids vax 6mo-6yrs, boosters, Moderna, Pfizer, 4th dose pic.twitter.com/Vk3SeEHWh6

— Vinay Prasad, MD MPH 🎙️📷 (@VPrasadMDMPH) March 25, 2022