Study on antibiotic resistance profiles of Escherichia coli isolated from the surface of pork-selling counters in wet markets in Gia Lam, Hanoi

Tóm tắt

The presence of Escherichia coli (E. coli) on food contact surfaces is considered a significant risk to food safety and can have a major impact on public health. This study aimed to examine the contamination rate, antimicrobial resistance profiles, and several genes encoding virulence factors of E. coli recovered from the surfaces of pork-selling counters in wet markets in Gia Lam, Hanoi City. The findings in our study show that 50% (20/50) of swab samples carried E. coli. Resistance was most prevalent against tetracycline (75%), while ampicillin, streptomycin, and sulfamethoxazole/trimethoprim all demonstrated a slightly lower but identical resistance rate of 70%. The PCR test indicates that only one isolate (5%) harbored the stx2 gene and one (5%) carried the eae gene, while none of the isolated strains possessed stx1 and ehxA.