A 7-month old patient presents with a history of 3 days of ferver to 104 F, Which resolved the same day that an exanthem erupted. The exanthem is prominent on the neck and trunk. It is macular, with
discrete lesions 3-5 mm in diameter.
Which of the following is the most likely diagnosis?
A) Erythema infectiosum.
B) Measles.
C) Roseola infantum.
D) Rubella.
E) Scarlet fever.
