Occurrence and characteristics of virulence genes of Escherichia coli strains isolated from healthy dairy cows in Inner Mongolia, China

Virulence genes of Escherichia coli (E. coli) isolates from healthy dairy cows were identified and characterized by a multiplex PCR assay and serogrouping test. The results showed that among the target genes, eaeA was most frequently detected, accounting for 22.11% (67/303) in all strains from 101 c...

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Detalles Bibliográficos
Autores principales: Huasai, Simujide, Chen, Aorigele, Wang, Chun-jie, Li, Yu, Tongrige, Bai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade Brasileira de Microbiologia 2012
Materias:
Veterinary Microbiology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3768809/
https://www.ncbi.nlm.nih.gov/pubmed/24031860
http://dx.doi.org/10.1590/S1517-83822012000200013
Descripción
Sumario:Virulence genes of Escherichia coli (E. coli) isolates from healthy dairy cows were identified and characterized by a multiplex PCR assay and serogrouping test. The results showed that among the target genes, eaeA was most frequently detected, accounting for 22.11% (67/303) in all strains from 101 cows. For categorization of E. coli, aEPEC was the category with widest distribution detected in 55 (18.15%) strains from 22 cattle. All of 84 PCR-positive strains belonged to 14 O serogroups, and O149 (25.00%) was most common identified, followed by O2 (17.86%), O8 (11.90%) and O103 (9.52%) with relatively high prevalence.

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