Examination revealed conjunctival injection; maculopapular rash involving the face, trunk, and arms; and redness of the hard palate. Laboratory tests found leukopenia (leukocyte count of 3.65 × 109 cells/L [reference range, 4.00 to 10.80 × 109 cells/L]), lymphopenia (lymphocytes accounted for 13.0% of all leukocytes [reference range, 20.0% to 40.0%]), and bandemia (band cells accounted for 19% of all leukocytes [reference range, 1% to 10%]) but normal erythrocyte and platelet counts, normal basic metabolic profile, and negative results on rapid streptococcal testing and malaria smears. The C-reactive protein level was mildly elevated at 178.10 nmol/L (reference range, 0.76 to 28.50 nmol/L). Serologic tests found immunity to rubella but not rubeola. Tests for IgM and IgG antibodies to dengue and chikungunya viruses were sent, and negative results were reported 2 weeks later.