A 2-year-old child experienced an upper respiratory infectio…
A 2-year-old child experienced an upper respiratory infection 2 weeks prior to hospital admission. The patient was seen in the emergency room 3 days prior to admission with a high fever. Physical exam revealed an exudative pharyngitis and bilaterally enlarged lymph nodes. The child’s condition worsened and he eventually developed into respiratory distress. Of the following choices, the disease that is most likely causing these symptoms is: