Enterotoxigenic Escherichia coli strains belonging to a new serogroup, Escherichia coli O166.
Thirty-two strains of Escherichia coli belonging to a new O group, O166, were examined. Twenty-one strains had the flagella antigen H27, five had the H15 antigen, five had the H7 antigen, and one was nonmotile. All the H27 strains and the nonmotile strain produced heat-stable enterotoxin but not heat-labile enterotoxin. All the H7 strains produced heat-labile enterotoxin but not heat-stable enterotoxin. The remaining strains were nonenterotoxigenic. None of the strains possessed colonization factor antigens CFA/I, CFA/II, or PCF8775.
D000268:Adhesiveness; D000942:Antigens, Bacterial / Q000032:analysis; D004768:Enterotoxins / Q000096:biosynthesis*; D004926:Escherichia coli / Q000145:classification* / Q000276:immunology / Q000472:pathogenicity; D012703:Serotyping
D000942:Antigens, Bacterial; D004768:Enterotoxins