translation.en: The disease is usually mild, but more severe clinical presentation with neurological symptoms (meningitis and encephalitis) may occur, sometimes resulting in death.
translation.mt: Il-marda ġeneralment hija ħafifa, iżda jista' jkun hemm preżentazzjoni klinika iżjed severa b'sintomi newroloġiċi (meninġite u enċefalite), li xi drabi jwasslu għall-mewt.