translation.en: Diphtheria is an acute disease caused by toxin-producing strains of Corynebacterium diphtheriae (in some cases also by Corynebacterium ulcerans) bacteria, that is known to colonise mucous membranes.
translation.hu: A diftéria olyan akut megbetegedés, amelyet a nyálkahártyán megtelepedő Corynebacterium diphtheriae (bizonyos esetekben a Corynebacterium ulcerans) baktérium toxintermelő törzsei okoznak.