Prevalence of enterotoxigenic Bacteroides fragilis strains (ETBF) in the gut of children with clinical diagnosis of antibiotic associated diarrhoea (AAD)

Prevalence of enterotoxin producing Bacteroides fragilis (ETBF) strains in faecal samples of children with clinical diagnosis antibiotic associated diarrhoea (AAD) was investigated. Out of faecal samples collected from sixty children, thirty C. difficile strains were isolated. Enterotoxigenic B. fragilis (ETBF) strains were cultured from four children what made 6.7% of investigated faecal samples. Out of two samples toxinogenic C. difficile strains tox A(+) tox B(+)] were cultured together with enterotoxinogenic B. fragilis. From sample of one child C. difficile A negative/B positive strains tox A(-) tox B(+)] was found together with B. fragilis (ETBF). From faecal sample of one child enterotoxinogenic B. fragilis only was isolated. It was shown that in the gut of children with clinical diagnosis of (AAD) enterotoxinogenic B. fragilis (ETBF) can be present. B. fragilis (ETBF) can be observed in concomitance with toxinogenic C. difficile.