I think Moderna and Pfizer were covering for each other with the same formula(s). I had to process thousands of vaccine cards and Pfizer batches were the only ones dedicated medical personnel only had access to to verify and they were constantly changing formats until they matched Moderna’s at the end. I think that was the point they found their “sweet spot” on desired outcome. Deaths (instant) declined but long-term illnesses, explosive cancers, etc. rose.