*''Corynebacterium diphtheriae''
**droplet infection - human to human**congestion/over crowding overcrowding is a risk factor**incubation 2-5 days (1-10 days)
*''Corynebacterium ulcerans''
**cattle
**dogs and cats
**especially in UK
*''Corynebacterium pseudotuberculosis''
**very rarely
==epidemiology==
*mortality among hospitalized patients in San Lazaro Hospital in the Philippines
**43.8%
===outbreaks===
*former Soviet Union in 1990s after collapse of the Union
*refugee/emergency settings
**Yemen
**Rohingya in Myanmar
**Venezuela
**Haiti
==clinical picture==