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Comment by icegreentea2

Moderna estimated to have half the risk of break through infection by delta variant.

Moderna and Pfizer both have comparable (low) risk of hospitalization and death when infected with delta variant.

Primary difference vaccines is dosage (Moderna had a bit over 3x amount of material per shot) and maybe scheduling (Pfizer was scheduled for 21 days between shots, Moderna for 28 - though given how shots were actually administered in reality, this is probably a wash).

Study design has many limitations, but is probably reasonably generalizable.

As a Canadian with combo Pfizer+Moderna, I am personally curious what my risk profile would look like. I wonder if a similar study on Canadian data could be useful - an intermediate risk profile for the combo shot would sure be persuasive evidence.

Edit: Removed ambiguity in second sentence.

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