Multi-drug Resistant and Extended Spectrum β-lactamase Producing Salmonella Species Isolated from Fresh Chicken Liver...

Area of Science:

• Food Microbiology
• Antimicrobial Resistance
• Public Health

Background:

• Antibiotic resistance in foodborne pathogens is a significant global health concern.
• Fresh meat products can act as vehicles for transmitting resistant microbes to humans.

Purpose of the Study:

• To investigate the prevalence and antimicrobial resistance patterns of Salmonella species in fresh chicken liver.
• To specifically identify extended-spectrum beta-lactamase (ESBL) producing Salmonella.

Main Methods:

• Isolation and identification of Salmonella from 200 fresh chicken liver samples.
• Antimicrobial susceptibility testing (AST) using disk diffusion with 7 agents.
• Detection of extended-spectrum beta-lactamase (ESBL) production.

Main Results:

• Salmonella was detected in 30.5% of samples, with Salmonella Typhi in 7.5%.
• All isolates were resistant to colistin; 98.4% were multi-drug resistant (MDR).
• ESBL production was identified in 47.5% of Salmonella isolates.

Conclusions:

• Fresh chicken liver in Bharatpur Metropolis serves as a reservoir for MDR Salmonella, including ESBL producers.
• These resistant bacteria present a potential transmission risk to humans through food contact or consumption.
• Findings highlight the need for improved food safety practices and surveillance.