10/01/2023 Dr. Peter McCullough: A recent study by Brogna and colleagues used mass spectrometry to identify a distinct amino acid signature of the vaccine-derived spike protein. Alarmingly, they found it circulating in the body for 180 days in approximately 50% of vaccine recipients. That means 50% of people who took the shots walking around out there, every six months, they take a shot, they’ll have continually circulating spike protein.