Where Does The Diphtheria Bacteria Come From?

Where Does The Diphtheria Bacteria Come From? Causes and Spread to Others. Diphtheria bacteria usually spread from person to person through respiratory droplets What is the source of the diphtheria toxin? Diphtheria toxin (DT) is one of the most extensively studied bacterial toxins with intracellular action. It is produced by toxigenic strains of Corynebacterium diphtheriae