evidence: It is "definitely untrue" that the vitamin K shot is harmful and unnecessary, Dr. Eugene Shapiro, a professor of pediatrics and epidemiology at Yale School of Medicine, told us in an email. [...] Rougerie, Pablo. "Vitamin K shots are safe and polysorbate 80 isn’t poisonous, contrary to claim by Brandy Vaughan." Health Feedback. 25 May 2023. [...] Malashenko, Uliana. "Fact Check: Vitamin K Shots Do NOT ‘Poison’ Babies — They Protect Newborns From Life-Threatening Events." Lead Stories. 25 Aug 2023.