Abstract
Hemagglutination (HA) tests using human and bovine erythrocytes and microagglutination tests using pili-specific antisera (PSA) were performed to examine 168 strains ofEscherichia coli belonging to enterotoxin-associated serotypes for colonization factors (CFs). Seventy-one (42%) of these 168 strains possessed at CF, but only 10 (6%) were found positive by both HA and PSA tests. Groups of test strains from different sources (feces, urine, blood, and wounds) were not found to contain statistically different percentages of CF-positive strains. Strains producing heat-stable enterotoxin alone were less frequently associated with a CF than were other enterotoxigenic and nonenterotoxigenic strains. Strains showing heat-labile hemolytic activity and belonging to serotype O6: H—were less likely (P=0.014, Fisher's exact probability) to contain a CF than were similarly hemolytic strains belonging to other serotypes.
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DeBoy, J.M., Thorne, G.M., Deneke, C.F. et al. Colonization factors andEscherichia coli belonging to enterotoxin-associated serotypes. Current Microbiology 6, 49–53 (1981). https://doi.org/10.1007/BF01566726
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DOI: https://doi.org/10.1007/BF01566726