A botulism case of a 12-year-old girl caused by intestinal colonization of Clostridium botulinum type Ab.

We encountered a 12-year-old girl, who had contracted food-borne botulism, and subsequently suffered from obstinate constipation for more than half a year. Even on hospital day 122, Clostridium botulinum and its toxin were detected in her stool specimens. The potency of the toxin of the blood serum sampled before treatment was 20 mouse minimum lethal dose per ml.