Pancreatitis complicating adult immunisation with a combined mumps measles rubella vaccine. A case report and literature review.

We report a case of pancreatitis and parotitis in an adult male following immunisation with a trivalent mumps-measles-rubella vaccine. Presentation was 21 days after vaccination, with the patient making a full recovery without intervention. A literature review revealed only five other such cases, with the Urabe strain of attenuated mumps virus appearing to be disproportionately represented. The Urabe vaccine strain has been withdrawn in some countries as it has been implicated disproportionately in the genesis of post-vaccination aseptic meningitis. Temporal separation of pancreatitis onset from vaccination raises the possibility that pancreatitis as a complication of mumps vaccination is under reported.