In a study released last week, the CDC found that Moderna was significantly more effective against hospitalizations and emergency department or urgent care encounters than the Pfizer or J&J vaccines.
It raises questions about whether the two vaccines should be treated the same way policy-wise.
"There have been sort of signals from enough separate sources that start to paint a picture that may reflect a real biological phenomenon — a real difference. I’m starting to believe that there’s something underlying it," said Natalie Dean, an Emery professor who specializes in vaccine study design.
The large CDC study that found a significant difference in the vaccines' effectiveness found that Moderna's was higher across all ages.https://www.cdc.gov/mmwr/volumes/70/wr/mm7037e2.htm?s_cid=mm7037e2_whttps://www.cdc.gov/mmwr/volumes/70/wr/mm7037e3.htm?s_cid=mm7037e3_w