An Epidemiologist on What to Expect From a Covid-19 Vaccine

Pfizer says they have a 90% effective vaccine. What does that mean?

Life-saving. Source: SELF Magazine

The holy grail of Covid-19 has been, for most of the year, a vaccine. We’ve all been using “when we’ve got a vaccine” as a synonym for “back to normal,” because the only return to normalcy that we can really envision is based on everyone being…