Prevalence of verotoxin-producing Escherichia coli (VTEC) in bovine coli mastitis and their antibiotic resistance patterns.
Between December 1996 and October 1997, milk samples from a total of 145 cows with coli mastitis were screened for the presence of verotoxin-producing E. coli (VTEC). VTEC were found in four (2.8%) out of the 145 samples. The four isolated strains proved to be verotoxin (VT) 1-, VT2- or VT1- and VT2-positive. However, no strain contained all three virulence factors tested. Further strain characterization was carried out by serotyping as well as by resistance pattern analysis.
Stephan
R
R
Institute of Food Safety and Hygiene, University of Zurich, Switzerland.
Kühn
K
K
D000818:Animals; D001427:Bacterial Toxins / Q000096:biosynthesis*; D002417:Cattle; D004269:DNA, Bacterial / Q000737:chemistry; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000145:classification / Q000187:drug effects / Q000235:genetics / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary*; D005260:Female; D008414:Mastitis, Bovine / Q000382:microbiology*; D008892:Milk / Q000382:microbiology; D022622:Shiga Toxin 1; D013557:Switzerland; D014774:Virulence
D001427:Bacterial Toxins; D004269:DNA, Bacterial; D022622:Shiga Toxin 1