Sacagawea (2000-Now)

Diphtheria is an upper respiratory tract illness characterized by sore throat, low-grade fever, and an adherent membrane (a pseudomembrane) on the tonsil(s), pharynx, and/or nose. A milder form of diphtheria can be limited to the skin. more...

It is caused by Corynebacterium diphtheriae, an aerobic Gram-positive bacterium.

Diphtheria is a highly contagious disease spread by direct physical contact or breathing the secretions of those infected. Diphtheria was once quite common, but has now largely been eradicated in developed nations. In the United States for instance, there have been fewer than 5 cases a year reported since 1980, as the DPT (Diphtheria-Tetanus-Pertussis) vaccine is given to all school children. Boosters of the vaccine are recommended for adults because the benefits of the vaccine decrease with age; they are particularly recommended for those travelling to areas where the disease has not been eradicated yet.

Signs and symptoms

The respiratory form has an incubation period of 2-5 days. The onset of disease is usually gradual. Symptoms include fatigue, fever, a mild sore throat and problems swallowing. Children infected have symptoms that include nausea, vomiting, chills, and a high fever, although some do not show symptoms until the infection has progressed further. In 10% of cases, patients experience neck swelling. These cases are associated with a higher risk of death.

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