Blatant insubordination.
I specifically ordered all employees and their families to get a flu shot. No exceptions. This morning, I overheard her telling another of my subordinates that her son had the flu. I immediately ordered her and our HR administrator into my office and told her to pack her things. Fridays are usually the best days to fire people, but she didn't want to go easy. She tried to give me some BS about an egg allergy and "developmental delays" blah blah blah, but I wasn't really listening. We are at an EPIDEMIC now because of morons like her and others who refuse to get this life-saving vaccine.