MMR
Meaning of MMR in English
/ ˌem em ˈɑː(r); NAmE / abbreviation
measles , mumps , rubella :
an MMR jab (= a vaccine given to small children to prevent these three diseases)
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005