The first direct molecular evidence of mRNA vaccine transmission (shedding). HALF of unvaccinated pregnant women tested had Pfizer mRNA in their placenta and/or blood.
The first direct molecular evidence of mRNA vaccine transmission (shedding). HALF of unvaccinated pregnant women tested had Pfizer mRNA in their placenta and/or blood. https://t.co/BPBDUH1N6J pic.twitter.com/w0D0BQLBL5
— Nicolas Hulscher, MPH (@NicHulscher) December 4, 2025
