A 28-month-old female child, weighing 3.74 kilograms, was born after an uneventful 39-weeks gestation. The mother had prenatal care and was 29 years old. The infant had some early bouts of diarrhea and required hospitalization for mild dehydration. The diarrhea was severe enough, indicating a lactose intolerance. Previous episode of hospitalization When the baby was ten months old, she developed a seizure disorder. The seizures were not precipitated by fever and were not grand mal. Instead, the infant appeared to be in a non-responsive, post-ictal state after the bouts.

The mother claimed to witness these seizures and sought medical care. The infant was sent to a pediatric neurologist at the age of 19 months and had a CT scan. No mass was identified on the scan. Glucose was 40 mg/dl The cell count had 10 mature lymphocytes and no red blood cells. The total protein was normal. Cultures…