Contents

5 Diphtheria

5.1 Bacteriology

Diphtheria is a serious, often fatal, toxin-mediated disease caused by Corynebacterium diphtheriae, a non-sporulating, non-encapsulated, gram-positive bacillus. Rarely, it may also be caused by other toxin-carrying Corynebacteria species, such as Corynebacterium ulcerans.