mRNA shedding refers to the transmission of vaccine-generated spike proteins or lipid nanoparticles (LNPs) from vaccinated individuals to the unvaccinated through bodily fluids, aerosols, or skin contact, potentially inducing unintended immunological or pathological effects in recipients [A-2][A-9][S-1]. Unlike traditional viral shedding (e.g., live attenuated vaccines), mRNA shedding involves horizontal transfer of synthetic genetic material or its byproducts, raising ethical and biological concerns about uncontrolled exposure to gene therapy components.