General Discussion
In reply to the discussion: Pregnant nurse: I was fired for refusing flu vaccine [View all]Ms. Toad
(38,742 posts)without bothering reading the links to studies which have shown a statistical link between the influenza vaccine and miscarriage in women with a history of miscarriage.
It is an area of current research, in which the answer is not yet clear - but there is both statistical data and theoretical explanations which support her concern. Her doctors (who provided letters to her employer) are treating her, and likely have a lot better idea than you do about whether she is in a population which should avoid the influenza vaccine.
So yes, she is seeking a waiver for medical reasons - reasons you simply don't have enough information to evaluate, because you apparently haven't read the research and you don't know her personal medical history. Her doctors do.