If the first two times didn't work… maybe a third will do the trick

>IU: Nearly all mumps patients were vaccinated, prompting some students to get third MMR shot

>Fourteen of the infected students had been vaccinated prior to their mumps diagnoses, according to Carney, prompting university and health officials to offer additional shots.

https://www.wishtv.com/news/local-news/iu-nearly-all-mumps-patients-were-vaccinated-prompting-some-students-to-get-third-mmr-shot/1935080190