What damage does diphtheria cause?

Diphtheria primarily affects the respiratory system, causing a thick gray membrane to form in the throat, which can lead to severe breathing difficulties and airway obstruction. The toxin produced by the bacteria can also damage the heart, leading to myocarditis, and affect the nervous system, resulting in paralysis. If left untreated, diphtheria can lead to serious complications and even death. Vaccination has significantly reduced the incidence of this disease.