Journal
VETERINARY MICROBIOLOGY
Volume 143, Issue 2-4, Pages 420-423Publisher
ELSEVIER
DOI: 10.1016/j.vetmic.2009.11.016
Keywords
Shiga toxin-producing Escherichia coli (ST-EC); E. coli O157:H7; Wild boars; Serotyping; Phage typing; Pulsed-field gel electrophoresis
Categories
Funding
- Consejeria de Educacion y Ciencia de la Junta de Comunidades de Castilla-La Mancha
- Fondo Social Europeo [09/02-C]
- Junta de Extremadura [PRE06053]
- Ministerio de Educacion y Ciencia
- Junta de Extremadura
- FEDER [3PR05A009-III]
- Xunta de Galicia [PGIDIT065TAL26101PR, 07MRU036261PR]
- Ministerio de Educacion y Ciencia [AGL-2008-02129]
- Fondo de Investigacion Sanitaria (Institut de Salud Carlos III, Ministerio de Sanidad y Consumo, Spanish Network for the Research in Infectious Diseases, REIPI [RD06/0008-1018]
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The aim of this work was to determine the prevalence and characteristics of Escherichia coli O157:147 and non-O157 Shiga toxin-producing E. coli (STEC) in free-ranging wild boars killed during the hunting season in southwest Spain. Faecal samples from 212 wild boars (Sus scrota) were collected and examined for STEC. Characterisation of isolates was performed by PCR, serotyping, phage typing, and pulsed-field gel electrophoresis (PFGE). E. coli O157:H7 and non-O157 STEC were isolated from 7 (3.3%) and 11 (5.2%) animals, respectively, and the resulting 19 isolates were characterised. The PCR procedure indicated that 4 isolates carried the stxi gene, 12 carried the stx2 gene, and 1 contained both of these genes. The ehxA, eae, and saa genes were detected in 13, 8, and 1 of the isolates, respectively. The eae-positive isolates comprised the types eae-gamma 1 and eae-zeta. The isolates belonged to 11 0:H serotypes, including 4 new serotypes not previously reported within STEC strains, and the majority of them were from serotypes previously associated with human infection. E. coli O157:H7 isolates belonged to phage types associated with severe human illness: PT14, PT34, and P154. Indistinguishable PFGE types were found in E. coli O157:H7 isolates recovered from a wild boar and from a human patient with diarrhoea living in the same geographic area. (C) 2009 Elsevier B.V. All rights reserved.
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