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 Previous Article

Applied and Environmental Microbiology, January 2009, p. 292-295, Vol. 75, No. 1
0099-2240/09/$08.00+0     doi:10.1128/AEM.01534-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Prevalence and Characteristics of eae- and stx-Positive Strains of Escherichia coli from Wild Birds in the Immediate Environment of Tokyo Bay {triangledown}

Hideki Kobayashi,* Mika Kanazaki, Eiji Hata, and Masanori Kubo

National Agriculture and Food Research Organization, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan

Received 7 July 2008/ Accepted 24 October 2008

The prevalence and characteristics of eae- and stx-positive Escherichia coli strains in wild birds in the immediate environment of Tokyo Bay, Japan, was examined using cloacal swab samples taken from 447 birds belonging to 62 species. PCR screening showed that the prevalences of stx- and eae-positive strains of Escherichia coli were 5% (23/447) and 25% (113/447), respectively. Four strains of stx2f-positive E. coli were isolated from two feral pigeons, an oriental turtle dove and a barn swallow. In contrast, 39 eae-positive E. coli strains were isolated, and most of the strains possessed a subtype of intimin that is classified as a minor group of human intimins, such as intimin {upsilon}, {kappa}, and µ. Moreover, these strains did not possess any of the other pathogenic genes tested, such as stxs, ehxA, bfp, or irp. Thus, wild birds were considered to be a reservoir of atypical enteropathogenic E. coli.

* Corresponding author. Mailing address: Center for Animal Disease Control and Prevention, Group of Biological Products, Quality Control Division, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan. Phone/fax: 81-29-838-7874. E-mail: reptile{at}affrc.go.jp

{triangledown} Published ahead of print on 7 November 2008.

Applied and Environmental Microbiology, January 2009, p. 292-295, Vol. 75, No. 1
0099-2240/09/$08.00+0     doi:10.1128/AEM.01534-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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