Greg Poland, a Mayo Clinic infectious-disease specialist who has been campaigning for mandatory flu shots for health workers for years, said the shots were "unquestionably a patient-safety issue." He said he thinks health institutions have been unduly fearful of employee reaction. He finds it "remarkable" that "entities entrusted with and privileged to care for the public health are not doing something that the data show is beneficial to the health and welfare of patients because of fear of employee pushback."