Diphtheria is an acute bacterial disease that usually affects the tonsils, throat, nose, or skin. Although respiratory diphtheria is endemic in many parts of the world, it is very rarely seen in the United States. Unimmunized or incompletely immunized travelers can contract diphtheria when visiting endemic areas. The DTaP, Td, and Tdap vaccines all protect against diphtheria.
Who’s at Risk, How it Spreads, and More
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