نتایج جستجو برای: ecoli o157

تعداد نتایج: 6123  

2010
Erik Eriksson

Verotoxinogenic E. coli O157:H7 (VTEC O157:H7) can cause severe disease in humans, with bloody diarrhea and complications such as haemolytic uraemic syndrome (HUS), thrombotic thrombocytopenic purpura (TTP) and even death. Animals carry VTEC O157:H7 asymptomatically. Ruminants, especially cattle, are considered to be the main reservoir, although the bacterium can occasionally be isolated from o...

Journal: :Journal of clinical microbiology 2004
Indira T Kudva Robert W Griffin Megan Murray Manohar John Nicole T Perna Timothy J Barrett Stephen B Calderwood

Polymorphic amplified typing sequences (PATS) for Escherichia coli O157:H7 (O157) was previously based on indels containing XbaI restriction enzyme sites occurring in O-island sequences of the O157 genome. This strain-typing system, referred to as XbaI-based PATS, typed every O157 isolate tested in a reproducible, rapid, straightforward, and easy-to-interpret manner and had technical advantages...

Journal: :Bacteriophage 2011
Raul R Raya Rebecca A Oot Ben Moore-Maley Serena Wieland Todd R Callaway Elizabeth M Kutter Andrew D Brabban

In preparing sheep for an in vivo Escherichia coli O157:H7 eradication trial, we found that 20/39 members of a single flock were naturally colonized by O157:H7-infecting phages. Characterization showed these were all one phage type (subsequently named CEV2) infecting 15/16 O157:H7, 7/72 ECOR and common lab strains. Further characterization by PFGE (genome∼120 kb), restriction enzyme digest (DNA...

ژورنال: Medical Laboratory Journal 2015
Rouhi, S, , Safaari, M, , Shakib, P, , Zolfaghari, MR, ,

Abstract Background and Objective: Diarrheal diseases may occur in all age groups, worldwide. Escherichia coli (E. coli O157: H7) is one of the most important bacterial agents causing this disease. The purpose of this study was to assess the prevalence of diarrhea in patients with acute diarrhea caused by this bacterium. Material and Methods: In this study, 214 stool samples were collected from...

Journal: :Emerging Infectious Diseases 1997
A. Caprioli A. E. Tozzi G. Rizzoni H. Karch

To the Editor: Shiga toxin–producing Escherichia coli (STEC) infections are an important cause of severe human disease. Although most infections are caused by strains of serogroup O157, STEC pathogenic to humans may belong to other serogroups usually referred to as non-O157 STEC. Recently, Tarr et al. (1) and Acheson et al. (2) described infections attributable to STEC O103 and expressed concer...

Journal: :Clinical and diagnostic laboratory immunology 2003
Armando Navarro Carlos Eslava Ulises Hernandez Jose Luis Navarro-Henze Magali Aviles Guadalupe Garcia-de la Torre Alejandro Cravioto

In Mexico, diarrheal disease due to different serotypes of Escherichia coli is highly prevalent, with only sporadic isolation of O157 non-H7 strains. This could be due to exposure to the O157 or related E. coli lipopolysaccharide (LPS), such as O7 or O116, at an early age. By using enzyme-linked immunosorbent assay (ELISA) and Western blotting, the present study analyzed 605 serum samples from ...

Journal: :Applied and environmental microbiology 1998
I T Kudva K Blanch C J Hovde

Farm animal manure or manure slurry may disseminate, transmit, or propagate Escherichia coli O157:H7. In this study, the survival and growth of E. coli O157:H7 in ovine or bovine feces under various experimental and environmental conditions were determined. A manure pile collected from experimentally inoculated sheep was incubated outside under fluctuating environmental conditions. E. coli O157...

2015
Rebecca Cote Robab Katani Matthew R. Moreau Indira T. Kudva Terrance M. Arthur Chitrita DebRoy Michael M. Mwangi Istvan Albert Juan Antonio Raygoza Garay Lingling Li Maria T. Brandl Michelle Q. Carter Vivek Kapur

Shiga toxin-producing Escherichia coli O157:H7 (O157) are significant foodborne pathogens and pose a serious threat to public health worldwide. The major reservoirs of O157 are asymptomatic cattle which harbor the organism in the terminal recto-anal junction (RAJ). Some colonized animals, referred to as "super-shedders" (SS), are known to shed O157 in exceptionally large numbers (>104 CFU/g of ...

Journal: :Infection and immunity 2008
Pablo Nart Stuart W Naylor John F Huntley Iain J McKendrick David L Gally J Christopher Low

Recent research has established that the terminal rectum is the predominant colonization site of enterohemorrhagic Escherichia coli O157:H7 in cattle. The main aim of the present work was to investigate pathological changes and associated immune responses at this site in animals colonized with E. coli O157:H7. Tissue and gastrointestinal samples from a total of 22 weaned Holstein-cross calves c...

Journal: :Journal of clinical microbiology 1992
H Böhm H Karch

Pulsed-field gel electrophoresis of genomic DNA was carried out on Escherichia coli O157:H7 strains from different geographic locations to determine its value in an epidemiological survey of O157 infections. Pulsed-field gel electrophoresis of XbaI-digested DNA fragments clearly separated E. coli O157:H7 strains from nontoxigenic E. coli O157:H19, O157:H43, and O157:H45 strains and from Shiga-l...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید