Comparing the Vaccines
There are three COVID vaccines available in the US: Moderna, Pfizer and Johnson & Johnson (also known as Janssen). Each vaccine is a little bit different, but they all provide the protection we need against COVID-19.
We often associate the vaccines with percentages representing how effective they are—Pfizer is 95% effective, for example. But what are the true differences between the vaccines, what do the numbers mean, and which statistics matter the most?
Learn How to Compare