background shiga toxin-producing escherichia coli (stec) strains are considered as one of the most important widespread food-borne pathogens, which cause diarrhea and life threatening diseases, such as hemolytic uremic syndrome, in humans. more recently, the stec strains have also been incriminated to cause diarrhea and hemorrhagic colitis in calves; enteropathogenic e. coli (epec) also causes ...

Background: Salmonella is the most important source of food-borne infections around the world. Human salmonellosis is also found in fresh fruit and vegetable salads. Objective: to investigate detection of Salmonella spp.,  in Hamburger, Vegetable salads and Cream-filled pastries from factories, supermarkets, restaurants and local confectionery, Mazandaran, Iran, as well as, to assess their pat...

BACKGROUND: Colibacillosis is one of the most prevalentdiseases in the world that causes multimillion-dollar annuallosses. OBJECTIVES: In order to evaluate molecular epidemiologyof some virulence associated factors in Escherichia coli,isolated from poultry, the presence of iut A, iss, hly F, omp T, iroN, afa, sfa (S)and pap G (II) were investigated by multiplex PCRassay. METHODS: Two hundred th...

Although Aeromonas are common in aquatic habitats and have been marked as an arising risk to human health, some information dealing with antibiotic resistance profiles virulence factor genes involved pathogenicity understood. The objective of this study was evaluate the profile for A. sobria identify genes. isolates were collected from AL-Hillah River Babel near hospital swage water January unt...

objectives we investigated the potential relationships between biofilm formation and prevalence of virulence genes (asa1, esp, cyla, and gele/spre), and antimicrobial resistance genes (aac (6’)/aph (2”) in enterococcus faecalis isolated from patients with urinary tract infection. patients and methods in this survey 95 e. faecalis isolates from patients with urinary tract infections staying at s...

abstract       background and objective: agr is the most important regulatory system for the expression of staphylococcus aureus virulence factors in different conditions. agr acts as a quorum sensing system in this bacterium which is activated by increased cell concentration during the transition from logarithmic growth phase to stationary phase. its role is to upregulate the secretory virulen...

Bacterial fruit blotch (BFB) caused by Acidovorax citrulli is a worldwide threat to watermelon and melon production. The type III secretion system (T3SS) plays an important role in the virulence of A. its host plants induce hypersensitive response (HR) non-host plants. Little known, however, about contribution T3SS biofilm formation . We mutated two T3SS-related genes hrcJ hrpE , respectively, ...