. Heated spores (80°C, 10 min) of strain CB 1002 isolated from a fatal case of necrotising enterocolitis in a human neonate were inoculated into ligated intestinal loops prepared in young conventional guinea pigs. Necropsy findings 18 h later included congestion, patchy haemorrhage of the intestinal mucosa and bacteraemia. No abnormalities were observed in control loops given inocula of inactivated spores (heated at 100°C for 10 min) or TYG 6 medium. The results suggest that vascular lesions are produced by in the intestine of young conventional guinea pigs.


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