My mother-in-law's mad because i didn't take my newborn to her house for a party during flu season. what can i say?

Smart.: I wouldn't take my newborn out to a party either. Let your mil know that especially before 4 mo, the baby's immune system isn't well developed yet and even little colds and other bugs can make them really sick. When things cool down between you and her, you should make sure she's gotten her whooping cough booster too... But tread lightly... You might need her for childcare later on. =).

Dr Cordero and another doctor agreed

See below: Let her know that the flu can be dangerous in infants, let alone newborns. And is is best to avoid exposure.

Dr Brown agreed

The truth: If she really cares about the baby she would want to protect him/her. That means NEVER exposing baby to risk, especially for something as trivial as a party. A newborn is different from a 1 or 5 year old. Your mothering skills are fine and she should get over it. If not, she is not worth the worry she causes. Never let her control you.