Data/hora: 06/06/2024 05:55:27

Provedor de dados: 	58	
País: 	Brazil	
Título: 	Virulence factors of Escherichia coli isolated from calves with diarrhea in Brazil	
Autores: 	Salvadori,Márcia Regina; Valadares,Geórgio Freesz; Leite,Domingos da Silva; Blanco,Jesús; Yano,Tomomasa.	
Data: 	2003-07-01	
Ano: 	2003	
Palavras-chave: 	Calves; Diarrhea; E. coli; Virulence factors.	
Resumo: 	Two hundred and five Escherichia coli strains isolated from calves with diarrhea from mid-western Brazil were screened for the presence of virulence factors associated with bovine colibacillosis. One hundred and two (49.8%) of the E. coli strains produced toxins: Shiga toxins 1 (9.7%) and 2 (6.3%), a-hemolysin (9.7%), enterohemolysin(6.8%), Cytotoxic Necrotizing Factors type 1 (0.5%), and type 2 (4.4%), enterotoxins LT-II (8.3%) and STa (3.9%). No strain produced enterotoxin LT-I. Fimbrial adhesins F5 and F17 were produced by 7.3% and 4.8% of the strains, respectivly, and none expressed F41. Seven strains (3.4%) possessed the gene eae and belonged to serotypes O26:H-; O111:H- and O118:H16. These results suggest that calves in Brazil may be an important source of pathogenic E. coli for animals and humans.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000300009	
Editor: 	Sociedade Brasileira de Microbiologia	
Relação: 	10.1590/S1517-83822003000300009	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Microbiology  v.34 n.3 2003	
Fonte: 	info:eu-repo/semantics/openAccess