Mononucleosis-like syndrome associated with a multisystem Coxsackie virus type B3 infection in adolescence.

We describe a severe multisystem Coxsackie virus type B3 infection in a previously healthy 14-year-old girl who presented with a mononucleosis-like syndrome (MS). Initial observations included a prominent cervical lymphadenopathy, exudative pharyngitis and leucocytosis with atypical lymphocytosis. At the end of the 2nd week of illness the patient developed meningoencephalomyelitis and haemolytic anaemia.