From Yale Medicine - Comparing the COVID-19 Vaccines: How Are They Different?

Posted 21 days ago

BY KATHY KATELLA  - Yale Medicine

[Originally Published: February 24, 2021; Updated: March 25, 2021]

Although each COVID-19 vaccine is unique, all of them may help with herd immunity.

Even if you're still waiting for a vaccine, watching the first people get their COVID-19 vaccinations may have felt like a huge relief. As the weeks pass, countless reports are coming out about the effectiveness of new vaccines that may be approved. It’s important to keep up, but it’s also a daunting task, given the flood of information (and misinformation) coming at us from so many directions.

So, how do they differ? Here’s what we know so far.

Vaccines from Pfizer-BioNTech and Moderna are being administered in the U.S. right now, Johnson & Johnson just received emergency use authorization (EUA) from the Food and Drug Administration (FDA) for its COVID-19 vaccine, and others are on track to do the same. Even though you will likely not be able to choose which vaccine you will get, it’s still helpful to know how each one is different.

With that in mind, we mapped out a comparison of the most prominent vaccines so far.

The three vaccines authorized by the FDA...