What causes diphtheria?

What causes diphtheria?

Diphtheria is caused by bacteria adhering to the lining of your respiratory system. These bacteria generate a toxin that damages your respiratory tissue cells. Within two or three days, the tissue left behind forms a bulky, grey coating. This coating has the potential to cover tissues in your voice box, throat, nose and tonsils. For the infected person, breathing and swallowing become hard to do.