Related to my post from last month about what a 95% or 66% efficacy rate of a vaccine even means, Vox made a clear and concise video about why comparing vaccine efficacy rates is difficult — trials were done in different countries with different variants under different conditions with different levels of disease — and why protection against severe illness, hospitalization and death is a better way to compare and evaluate these vaccines. As this chart from Dr. Eric Topol shows, all of the major vaccines show strong protection against severe illness.
