title: [Epidemiological effectiveness of mass vaccination against mumps in the People's Republic of Bulgaria].
mesh_terms: D002031:Bulgaria; D002648:Child; D002675:Child, Preschool; D003140:Communicable Disease Control; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009107:Mumps / Q000453:epidemiology / Q000517:prevention & control*; D014611:Vaccination
vernacular_title: Uber die Epidemiologische Wirksamkeit der Massenimpfung gegen Mumps in der VR Bulgarien.