Escherichia coli O157:H7 or E. coli O26, which were AS (antibiotic sensitive), AR (laboratory created antibiotic resistant mutants), or naturally MAR (multi-antibiotic resistant), were inoculated into laboratory media, yoghurt or orange juice and their growth/survival monitored during enrichment at 37 degrees C or storage at 4 degrees C. The strains were also inoculated into minced beef and the...

The aim of this study was to detect the virulence factors, serogroups, and antibiotic resistance properties of Shiga toxin-producing Escherichia coli, by using 268 bovine mastitic milk samples which were diagnosed using California Mastitis Test. After E. coli identification, PCR assays were developed for detection of different virulence genes, serogroups, and antibiotic resistance genes of Esch...

The level of acid resistance among Escherichia coli O157:H7 strains varies, and strains with higher resistance to acid may have a lower infectious dose. The complete genome sequences belonging to two strains of Escherichia coli O157:H7 with different levels of acid resistance are presented here.

We have assessed the prevalence of Escherichia coli O157 in diarrhoeal patients and surface waters from some selected sources in Zaria (Nigeria), evaluating the antibiotic susceptibility and plasmid profiles of 184 E. coli isolates, obtained from 228 water samples and 112 diarrhoeal stool specimens (collected from children aged <15 years), using standard methods. The detection rate of E. coli O...

CONTEXT The use of antibiotics for treatment of Escherichia coli O157:H7 infection has become controversial since a recent small study found that it may increase the risk of hemolytic uremic syndrome (HUS). However, other larger studies have reported a protective effect or no association. OBJECTIVE To determine whether antibiotic therapy for E coli O157:H7 enteritis increases the risk of HUS....

In the meat industry, a high-event period (HEP) is defined as a time period when beef processing establishments experience an increased occurrence of product contamination by Escherichia coli O157:H7. Our previous studies suggested that bacterial biofilm formation and sanitizer resistance might contribute to HEPs. We conducted the present study to further characterize E. coli O157:H7 strains is...

pigeons can be carriers of some human pathogens and contribute to transmission and spread of drug resistant infectious agents to human. considering many people’s interests to keep pigeons, present study was conducted to pcr detection of escherichia coli o157:h7 that is responsible for outbreaks of human intestinal diseases and fatal haemolytic-uraemic syndrome worldwide and evaluation of resist...

background and aims: escherichia coli are one of the important causes of diarrhea in children, adult and immune compromised ones in developing country. the aim of this study was to investigate the antibiotic resistance of e. coli isolated from gastroenteritis cases in shahrekord county, in order to obtain a rapid and suitable treatment. methods: in this descriptive analytical study, 234 fecal s...

conclusions our study showed high esbl incidence, with ctx-m genotype as the emerging strain in our hospitals. high co-resistance to other non-β-lactam antibiotics is a major challenge for the management of esbl infections. results the esbls were found in (62.89%) of e. coli and (67.5%) of k. pneumoniae isolates. the majority of the typeable isolates harbored two or more esbl genes (73%). overa...