R. Stephan et F. Untermann, Virulence factors and phenotypical traits of verotoxin-producing Escherichia coli strains isolated from asymptomatic human carriers, J CLIN MICR, 37(5), 1999, pp. 1570-1572
Fourteen verotoxin-producing Escherichia coli strains isolated from stool s
amples of 14 different asymptomatic human carriers were further characteriz
ed. A variety of serotypes was found, but none of the strains belonged to s
erogroup O157, Only one isolate carried most of the virulence genes that ar
e associated with increased pathogenicity.