In the rolling sugar plantation country around Pahala on the island of Hawaii, Dr. Robert Kaufman noted that his daughter Suzanne, 8, looked "awfully healthy." A week later Dr. Kaufman took a look at his son Philip, 6, and asked his wife: "Is Philip getting unusually healthy or have you been putting rouge on him?" Mrs. Kaufman laughed at the suggestion. Soon Dr. Kaufman realized that all his five children had some malady, and he described its symptoms to Territorial Epidemiologist James Enright in Honolulu.
Dr. Enright decided that it was erythema infectiosum, literally,...