A couple of things I found interesting from the study:

- The eligible participants in the study tended to be over the age of 65 (Moderna median = 66, Pfizer median = 68)

- The Pfizer cohort (738 eligible participants) was almost twice the size of the Moderna cohort (476 eligible participants)

Would these factors have skewed the results at all? To me it seems like the study strongly indicates a difference for those age 65 and over but not necessarily for younger groups.

There is also still evidence of strong protection from hospitalization and death with both vaccines so I don’t think anyone necessarily needs to be regretting the fact that they got a pair of Pfizer shots at this point.

Source study: https://www.cdc.gov/mmwr/volumes/70/wr/mm7038e1.htm#T1_down