Infant botulism. Identification of Clostridium botulinum and its toxins in faeces.

Clostridium botulinum and its toxin were identified in the faeces of four infants, aged 6 to 13 weeks, who had symptoms consistent with botulism. Two cases had type-A toxin and two cases had type-B toxin present in their faeces. No toxin was detectable in sera C.