Antibiotic Resistance in Salmonella from Retail Foods of Animal Origin and Its Association with Disinfectant and Heavy Metal Resistance.

This study aims to demonstrate the antibiotic resistance and its association with disinfectant and heavy metal resistance in 152 Salmonella isolates recovered from retail foods of animal origins. Susceptibility testing demonstrated that 92.8% isolates were resistant to at least one antibiotic, and the resistance was highest to oxytetracycline (80.

Disinfectant susceptibility of different Salmonella serotypes isolated from chicken and egg production chains.

Aims: The study aimed to serotype the Salmonella isolates recovered from chicken and egg production chains, and to investigate the disinfectant resistance phenotypes and genotypes of these isolates.

Methods And Results: The Salmonella isolates were serotyped, and the minimal inhibitory concentrations (MICs) of disinfectants were determined. Results showed that the Salmonella isolates recovered from both chains were diverse, and the serotypes in each part of the production chain and between the two production chains were significantly different.

Evaluation of agar dilution and broth microdilution methods to determine the disinfectant susceptibility.

A variety of disinfectants have been widely used in veterinary hygiene, food industries and environments, which could induce the development of bacterial resistance to disinfectants. The methods used to investigate antimicrobial effects of disinfectant vary considerably among studies, making comparisons difficult. In this study, agar dilution and broth microdilution methods were used to compare the antimicrobial activities of four quaternary ammonium compounds (QACs) against foodborne and zoonotic pathogens.

Antimicrobial and disinfectant resistance of Escherichia coli isolated from giant pandas.

Aims: The study aims to demonstrate the antimicrobial and disinfectant resistance phenotypes and genotypes of Escherichia coli isolates obtained from giant pandas (Ailuropoda melanoleuca).

Methods And Results: Antimicrobial testing was performed according to the standard disk diffusion method. The minimal inhibitory concentrations (MICs) of disinfectants were determined using the agar dilution method.

Molecular characterization of β-lactam-resistant Escherichia coli isolated from Fu River, China.

The present study aims to demonstrate the β-lactam resistance phenotypes and genotypes of Escherichia coli isolates from the Fu River in Chengdu, southwestern China. We obtained 108 E. coli isolates from nine sampling sites during May and December 2010.