A total of 19 strains of Klebsiella pneumoniae isolated as sole pathogen fr
om children with diarrhoea were used to study their virulence mechanism usi
ng different assays, Eight strains of K. pneumoniae exhibited aggregative a
dherence that was distinct from the stacked brick enteroaggregative pattern
shown by Escherichia coli. The study suggests the presence of a new virule
nce mechanism in the pathogenesis of Klebsiella-associated diarrhoea.