evidence: mRNA technology pioneer says Covid-19 vaccinated people can shed spike protein, Twitter says delete this [...] In Short - Luigi Warren tweeted that people vaccinated with mRNA-based vaccine can shed spike proteins. [...] Note that Luigi's tweet claimed that people vaccinated with mRNA-based vaccines shed spike proteins, an idea that has repeatedly been rejected by scientists from around the world. Twitter marking it as misinformation is hence, not a completely baseless move.