Each year we review the validity of mandatory flu vaccinations. It is usually in the context of health care organizations, as few other employers have had the same need. In the last few years, the analysis has remained the same: (1) what is the justification (often, employee and patient safety); (2) will there be medical and/or religious exemptions; and, if so, (3) what is the accommodation (it has generally been wearing a mask all times at work).