Can you please help us understand vaccine efficacy vs. effectiveness?


A: Why yes we can! Vaccine efficacy and effectiveness both measure the % reduction in disease in the vaccinated group compared to the unvaccinated group. Vaccine efficacy measures this under *optimal conditions*, such as a vaccine trial, and vaccine effectiveness measures this in *real world settings*. How was vaccine efficacy evaluated in vaccine trials? In

Dear Pandemic COVID Q&A

Mental Health Staying Safe Vaccines Videos

In this live Q&A, Dear Pandemic contributing scientists Drs. Sandra Albrecht and Malia Jones will be taking questions about pet birds, what 95% efficacy really means, when safety measures are just too much, and what’s up with that CDC thing about vaccines wearing off in 3 months. If you have a question, put it in