Diphtheria - Diphtheria is an upper respiratory tract illness caused by Corynebacterium diphtheriae.
https://en.wikipedia.org/wiki/Diphtheria
Diphtheria - MayoClinic.com - A comprehensive overview covers symptoms of this infection that's preventable with a vaccine.
https://www.mayoclinic.org/diseases-conditions/diphtheria/symptoms-causes/syc-20351897
Diphtheria: MedlinePlus - Diphtheria is an acute infectious disease caused by the bacteria Corynebacterium diphtheriae.
https://medlineplus.gov/
