evidence: A viral Oct. 27 blog post reads, "Pfizer Confirms COVID-Vaccinated People Can ‘Shed’ Spike Proteins And Harm The Unvaccinated." The claim can be traced to an April press release, when the hoax about vaccine shedding was proliferating. [...] The Centers for Disease Control and Prevention says that vaccine shedding "can only occur when a vaccine contains a weakened version of the virus," and none of the COVID-19 vaccines in use in the United States meet that description. Other vaccines, such as measles and flu, use a piece or weakened version of the germ that is being vaccinated against. [...] A blog post claims, "Pfizer Confirms COVID-Vaccinated People Can ‘Shed’ Spike Proteins And Harm The Unvaccinated."