This FULLY vaccinated nurse and her family even received booster shots of MMR after a vaccinated family member got mumps. Guess what? Other family members still got mumps.. Could this be real world evidence of the ineffectiveness of the mumps component of MMR? http://healthimpactnews.com/2019/pro-vaccine-nurse-of-22-years-defends-her-family-after-mumps-outbreak-among-her-fully-vaccinated-family-as-she-was-wrongly-accused-of-not-vaccinating/