





The source of infection is a sick person or carrier toxigenic Corynebacterium diphtheria.
Routes of transmission: airborne, contact-household, food.
Affects children and adults of all ages, but the highest sensitivity is typical for the age group of 3 to 7 years.
Children first year of life rarely get sick due to the presence in them of transplacental immunity.
Previous infection does not leave persistent immunity, so people who have had diphtheria, subject to further vaccination.
The incubation period lasts from 2 to 10 days.
Several distinct forms of the disease, depending on the place where the pathological process occurs: diphtheria, oropharynx, larynx, nose, eyes, genitals, skin, newborns - the umbilical wound.
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