This patient has been diagnosed with diphtheria, an upper respiratory tract illness which has largely been eradicated by the use of vaccines.
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According to the World Health Organization, 16 cases of diphtheria have been reported from 1993 to 2013 in the United States.
Without intervention, diphtheria can cause life-threatening airway obstruction, myocarditis, and neurologic sequelae.
To see more cases like this, visit Figure 1.