This is about vaccination. Specifically, mandatory vaccination of healthcare workers at hospitals and other facilities.
I read a recent post on the KevinMD blog from an ER doc who “wrote” a letter to his employer stating that he did not believe from current evidence that influenza vaccination was effective for workers or patients based on the conclusions of the Cochrane Collaboration, a highly respected group which generates recommendations for evidence-based standards of care. See here one of the articles to which this ER doc referred.
His secondary point was that perhaps a false sense of security was promoted by vaccinations. This sense of security may lead to less frequent handwashing, less compliance with standard or advanced precautions, and even coming to work when feeling ill. These physical behaviors (handwashing, standard precautions, PPE, etc.) that have definitely shown to reduce transmission of pathogens are being sidelined by those who have received vaccination, perhaps because they already felt they and their patients were protected.