Evaluation of multi-drug resistance, virulence factors, and antimicrobial resistance genes of non-typhoidal Salmonella isolated from ruminants as a potential human health threat in Razavi Khorasan, northeastern Iran.

Non-typhoidal Salmonella (NTS) is a significant foodborne pathogen that poses a threat to human health by causing infections and potentially acquiring antibiotic resistance. We evaluated thirty-five Salmonella serovars previously isolated from cattle, sheep, goats, and their retail meat in Razavi Khorasan Province, Iran. The isolates were confirmed with Salmonella polyvalent antiserum.

Antimicrobial resistance, β-lactamase genotypes, and plasmid replicon types of Shiga toxin-producing Escherichia coli isolated from different animal hosts.

Aims: The primary objective of this study was to analyze antimicrobial resistance (AMR), with a particular focus on β-lactamase genotypes and plasmid replicon types of Shiga toxin-producing Escherichia coli (STEC) strains originating from various animal hosts.

Methods And Results: A total of 84 STEC strains were isolated from cattle (n = 32), sheep/goats (n = 26), pigeons (n = 20), and wild animals (n = 6) between 2010 and 2018 in various regions of Iran. The Kirby-Bauer susceptibility test and multiple polymerase chain reaction (PCR) panels were employed to elucidate the correlation between AMR and plasmid replicon types in STEC isolates.

Molecular characterization and antimicrobial resistance of potentially human-pathogenic Escherichia coli strains isolated from riding horses.

Background: Transmission of antimicrobial resistant and virulent Escherichia coli (E. coli) from animal to human has been considered as a public health concern. This study aimed to determine the phylogenetic background and prevalence of diarrheagenic E.

Development of three multiplex-PCR assays for virulence profiling of different iron acquisition systems in .

Background And Objectives: is responsible for various enteric and extraintestinal infections in animals and humans. Iron as an essential nutrient, has a proven role in pathogenicity of . Pathogenic benefits of having complicated systems for iron acquisition but our current knowledge is limited because of complexity of these systems.

Virulence genes, Shiga toxin subtypes, major O-serogroups, and phylogenetic background of Shiga toxin-producing Escherichia coli strains isolated from cattle in Iran.

The aim of this study was to investigate the virulence potential of the isolated bovine STEC for humans in Iran. In this study a collection of STEC strains (n = 50) had been provided via four stages, including sampling from feces of cattle, E. coli isolation, molecular screening of Shiga toxin (stx) genes, and saving the STEC strains from various geographical areas in Iran.