evidence: Since at least spring 2021, claims spread that vaccinated people can "shed" elements contained within the COVID-19 vaccines that may harm unvaccinated individuals. A closer look at the various iterations of the claim revealed that the controversial and conspiracy-touting medical group, America's Frontline Doctors, issued a "press release" in April that made unproven claims about COVID-19 vaccine shedding, PolitiFact reported at the time. Such allegations resurfaced in the fall when a viral Oct. 27 blog post claimed that "Pfizer Confirms COVID-Vaccinated People Can 'Shed' Spike Proteins And Harm The Unvaccinated," noted Poynter. [...] In summary, it is true that viral shedding can occur when an infected individual spreads viral particles via the nose and mouth, transmitting the virus to uninfected people. It is also true live attenuated vaccines can case vaccine shedding. However, there is no evidence to suggest that either of the two forms of COVID-19 vaccines, mRNA and viral vector vaccines, can cause viral or vaccine shedding that would result in infecting unvaccinated individuals.