Read This: A Guide to the Covid-19 Vaccine Process

There are currently over 150 experimental Covid-19 vaccines in development, and a handful recently entered the final stages of human testing, biotech writer Emily Mullin reports for Medium’s Coronavirus Blog. But how will scientists know that a vaccine is working? Mullin outlines the process to come and what to expect. Read below.

How — and When — We’ll Know If a Covid-19 Vaccine Is Working