811 W. John Street, Yorkville, IL 60560
For 24/7 Mental or Public Health Emergencies, call 630-553-9100
Mon 8:30am - 4:30pm  •  Tue - Thu 8:30am - 7:00pm  •  Fri 8:30am - 4:30pm

Diphtheria (Vaccine Preventable)



An acute bacterial disease of the tonsils, pharynx, larynx, nose and occasionally other mucous membranes or skin.

Signs and Symptoms

Early signs and symptoms are fever and sore throat, with white or grayish patches on the throat, palate or tonsils, and swelling of the neck.  The early signs can be confused with severe tonsillitis or strep throat.  Lesions of cutaneous diphtheria vary and may be difficult to distinguish from impetigo.

Incubation Period

Incubation period is 2 to 5 days.

Mode of Transmission

Contact with an infected person or carrier.

Period of Communicability

Period of communicability is usually between 2 and 4 weeks.

Preventive Measures

Vaccine is available. Students must have a completed Illinois Certificate of Immunization with the recommended doses of vaccine/or legal exemptions to enter school.

Implications for School

Any illness suspicious of diphtheria should be immediately reported to Student Health Services, #___________________, who will report this to the Department of Health-in Kendall County to investigate and recommend appropriate control measures.

Serving the Residents of Kendall County Since 1966
811 W. John Street, Yorkville, IL 60560   •   630-553-9100