Long-term effects of human herpesvirus 6 infection.

To the Editor .— In 1969, I was living in Seoul, South Korea, and serving as a consultant to Holt Adoption Agency. I had arranged to escort a Korean orphan to his adoptive parents in the United States. He was a 6-month-old male infant who had had a break in his left arm; the infection had reached his bone, and he was running a fever of 102 to 103°F. On the day before our flight, his doctor asked me to consult on a rash of tiny gray vesicles that the infant had developed on the lower …