IE 11 is not supported. For an optimal experience visit our site on another browser.

What’s the difference between Pfizer and Moderna COVID-19 vaccines?

03:21

NBC’s Tom Costello joins TODAY to talk about the differences between the Pfizer-BioNTech and Moderna COVID-19 vaccines, explaining that the Moderna vaccine does not need to be kept as cold and there is some early evidence that it will protect against transmission.