| characteristics of a large mumps outbreak: clinical severity, complications and association with vaccination status of mumps outbreak cases. | in recent years, large mumps outbreaks, involving mainly adolescents and young adults, have re-emerged in several countries. we investigated a large mumps outbreak, evaluated the association between mumps clinical severity (complications, hospitalization) and vaccination status (number of previous measles, mumps and rubella - mmr vaccine doses), and assessed vaccine effectiveness. the first mumps cases emerged in an ultra-orthodox boys' school in jerusalem and were epidemiologically linked to th ... | 2015 | 25874726 |