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Infection and Immunity, July 2003, p. 4175-4177, Vol. 71, No. 7
0019-9567/03/$08.00+0     DOI: 10.1128/IAI.71.7.4175-4177.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Virulence Factors and Clonal Relationships among Escherichia coli Strains Isolated from Broiler Chickens with Cellulitis

Benito Guimarães de Brito,1 Luiz Carlos J. Gaziri,2 and Marilda C. Vidotto1*

Departamento de Microbiologia,1 Departamento de Ciências Fisiológicas, Universidade Estadual de Londrina, Campus Universitário, Caixa Postal 6001, 86051-970 Londrina, Parana, Brazil2

Received 5 November 2002/ Returned for modification 29 January 2003/ Accepted 22 April 2003

In this study, we compared Escherichia coli isolates from chickens with avian cellulitis with those from feces of healthy chickens. Cellulitis-derived strains presented phenotypic and genotypic characteristics of greater virulence than did the fecal isolates. Phylogenetic analysis by repetitive extragenic palindromic-PCR showed that, in agreement with their virulence characteristics, the cellulitis isolates form two clonal groups distinct from the fecal isolates.

* Corresponding author. Mailing address: Universidade Estadual de Londrina, Departamento de Microbiologia, CCB, Campus Universitário, Caixa Postal 6001, 86051-970, Londrina, Parana, Brazil. Phone: (43) 3371 4396. Fax: (43) 3327 4207. E-mail: macarlos{at}uel.br.

Editor: V. J. DiRita

Infection and Immunity, July 2003, p. 4175-4177, Vol. 71, No. 7
0019-9567/03/$08.00+0     DOI: 10.1128/IAI.71.7.4175-4177.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.





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