TABLE 4.

In vitro adherence phenotypes of ETEC type strains bearing CFA/I and related class 5 fimbriae

StrainCF typeMRHA score for erythrocyte typeResult for Caco-2 cell adherence indexa:
Human type ABovineChicken1b2c
H10407CFA/I4+4+3+54.3 ± 15.414.2 ± 2.7
WS2560BCS42+2+1+26.7 ± 7.02.9 ± 1.6
WS3294ACS142+3+3+63.3 ± 5.88.2 ± 2.4
WS1974ACS1d3+12.7 ± 8.62.1 ± 1.1
WS2173APCFO714+2+12.7 ± 6.21.8 ± 0.6
WS6788ACS174+10.0 ± 2.61.1 ± 0.2
WS0115ACS194+2+19.3 ± 6.01.8 ± 0.8
C91fCS23+3+69.3 ± 4.715.1 ± 4.7
  • a Represents the mean of the results from at least three experiments, each done in duplicate.

  • b Mean proportion of Caco-2 cells with at least one adherent bacterium (±SD).

  • c Mean number of adherent bacteria per Caco-2 cell with at least one adherent bacterium (±SD).

  • d −, negative.