Serotyping of O and pilus antigens of Escherichia coli strains isolated from chickens with coli-septicemia.
One hundred and fifty one Escherichia coli strains were isolated from broiler chickens with coli-septicemia in Aichi (63 strains), Shizuoka (58 strains), and Kagoshima (30 strains) prefectures from 1980 to 1987, and their O and pilus antigens were serologically typed. One hundred and twenty five strains (82.8%) were typed into 23 O serogroups, and twenty six strains (17.2%) remained untypable. The predominant O serogroups were O2 (35 strains, 23.2%) and O78 (24 strains, 15.9%). Distribution of O serogroup was different, depending on prefectures where they are isolated. In total, 109 strains (72.2%) possessed Type 1 and/or Fmsha pili (Type 1; 41 strains, Fmsha; 22 strains, and Type 1 and Fmsha; 46 strains), and 42 strains (27.2%) were non-piliated. All the strains lacked K88, K99, 987P, F41, and Att25 pili. The ratios of piliated strains to non-piliated ones were almost the same among the three prefectures. Strains possessing Type 1 pili showed variety of O antigens, but most of the strains with Fmsha pili belonged to O2 serogroup.
Ike
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K
Research Center for Veterinary Science, Kitasato Institute, Chiba, Japan.
Kume
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K
Kawahara
K
K
Danbara
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H
D000818:Animals; D000942:Antigens, Bacterial; D002645:Chickens; D004926:Escherichia coli / Q000145:classification* / Q000276:immunology; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary*; D010861:Fimbriae, Bacterial / Q000276:immunology*; D019081:O Antigens; D011201:Poultry Diseases / Q000382:microbiology*; D018805:Sepsis / Q000382:microbiology / Q000662:veterinary*; D012703:Serotyping
D000942:Antigens, Bacterial; D019081:O Antigens