AIMS: To determine the prevalence and characteristics of verotoxigenic Escherichia coli (VTEC), enteropathogenic E. coli (EPEC) and necrotoxigenic E. coli (NTEC) in healthy cattle. METHODS AND RESULTS: Faecal samples from 412 healthy cattle were screened for the presence of VTEC, EPEC and NTEC. Four isolates from each sample were studied. VTEC, EPEC and NTEC were isolated in 8.7%, 8.2% and 9.9% of the animals, respectively. VTEC and NTEC were isolated more frequently from calves and heifers than from adults. Seventy (4.2%), 69 (4.2%) and 74 (4.5%) of the 1648 E. coli isolates were VTEC, EPEC and NTEC, respectively. Seventeen (24.3%) of the VTEC strains were eae-positive. Thirty-six (51.4%) of VTEC strains belonged to E. coli serogroups associated with haemorrhagic colitis and haemolytic uraemic syndrome in humans. The serogroups most prevalent among the EPEC strains were O10, O26, O71, O145 and O156. CONCLUSIONS: Healthy cattle are a reservoir of VTEC, EPEC and NTEC. SIGNIFICANCE AND IMPACT OF THE STUDY: Although most of the VTEC strains were eae-negative, a high percentage of VTEC strains belonged to serogroups associated with severe disease in humans.
AIMS: To determine the prevalence and characteristics of verotoxigenic Escherichia coli (VTEC), enteropathogenic E. coli (EPEC) and necrotoxigenic E. coli (NTEC) in healthy cattle. METHODS AND RESULTS: Faecal samples from 412 healthy cattle were screened for the presence of VTEC, EPEC and NTEC. Four isolates from each sample were studied. VTEC, EPEC and NTEC were isolated in 8.7%, 8.2% and 9.9% of the animals, respectively. VTEC and NTEC were isolated more frequently from calves and heifers than from adults. Seventy (4.2%), 69 (4.2%) and 74 (4.5%) of the 1648 E. coli isolates were VTEC, EPEC and NTEC, respectively. Seventeen (24.3%) of the VTEC strains were eae-positive. Thirty-six (51.4%) of VTEC strains belonged to E. coli serogroups associated with haemorrhagic colitis and haemolytic uraemic syndrome in humans. The serogroups most prevalent among the EPEC strains were O10, O26, O71, O145 and O156. CONCLUSIONS: Healthy cattle are a reservoir of VTEC, EPEC and NTEC. SIGNIFICANCE AND IMPACT OF THE STUDY: Although most of the VTEC strains were eae-negative, a high percentage of VTEC strains belonged to serogroups associated with severe disease in humans.
Authors: José A Orden; Pilar Horcajo; Ricardo de la Fuente; José A Ruiz-Santa-Quiteria; Gustavo Domínguez-Bernal; Javier Carrión Journal: Appl Environ Microbiol Date: 2011-09-30 Impact factor: 4.792
Authors: M C Pearce; C Jenkins; L Vali; A W Smith; H I Knight; T Cheasty; H R Smith; G J Gunn; M E J Woolhouse; S G B Amyes; G Frankel Journal: Appl Environ Microbiol Date: 2004-03 Impact factor: 4.792
Authors: Lu Ya Ruth Wang; Cassandra C Jokinen; Chad R Laing; Roger P Johnson; Kim Ziebell; Victor P J Gannon Journal: Front Microbiol Date: 2018-08-31 Impact factor: 5.640
Authors: G Borriello; M G Lucibelli; E De Carlo; C Auriemma; D Cozza; G Ascione; F Scognamiglio; G Iovane; G Galiero Journal: Res Vet Sci Date: 2011-06-11 Impact factor: 2.534
Authors: M Ok; L Güler; K Turgut; U Ok; I Sen; I K Gündüz; M F Birdane; H Güzelbekteş Journal: Zoonoses Public Health Date: 2008-09-01 Impact factor: 2.702