Hemorrhagic Vasculitis

Mumps

Henoch-Schönlein purpura and drug and vaccine use in childhood: a case-control study. 2016, Da Dalt, Ital J Pediatr

In those vaccinated with MMR, the risk of hemorrhagic vasculitis was 3.4 times higher. In children, this disease usually goes away on its own, but in 1% of cases it can lead to kidney failure.