translation.en: In some patients the illness can progress to a severe form with haemorrhagic manifestations and hepatitis; possible complications include retinitis (inflammation of the retina) and encephalitis (inflammation of the brain).
translation.mt: F'xi pazjenti, il-mard jista' jiżviluppa għal forma severa b'manifestazzjonijiet emorraġiċi u epatite; kumplikazzjonijiet possibbli jinkludu retinite (infjammazzjoni tar-retina) u eċefalite (infjammazzjoni tal-moħħ).