Antibiotic Resistance Profiles of Campylobacter species Isolated from Raw Milk Sold by Street Vendors in Chennai

Author: A. Elango, T.R. Pugazhenthi and V. Jayalalitha

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Abstract

Campylobacter jejuni is a leading cause of bacterial gastroenteritis in humans, with rising concerns over its resistance to commonly used antimicrobial agents. This study aimed to evaluate the antimicrobial resistance patterns of Campylobacter spp. isolated from raw milk samples collected from street vendors in Chennai. A total of 47 isolates were tested against ampicillin, azithromycin, chloramphenicol, ciprofloxacin, doxycycline, gentamicin, kanamycin, norfloxacin, penicillin G, and tetracycline using in vitro susceptibility testing. The results indicated that all C. jejuni isolates were 100% sensitive to chloramphenicol. Additionally, 90% of isolates remained sensitive to gentamicin and kanamycin. However, resistance was observed against azithromycin (6.7%), ciprofloxacin (15.6%), norfloxacin (13.3%), doxycycline (40%), tetracycline (55.6%), and ampicillin (51.1%). Notably, all Campylobacter isolates exhibited complete resistance (100%) to penicillin G. These findings highlight the prevalence of antimicrobial resistance in C. jejuni, emphasizing the urgent need for continuous monitoring and the implementation of rational antimicrobial use strategies to control the spread of resistance in food borne pathogens

Keywords

Campylobacter jejuni – antimicrobial resistance – raw milk – street vendor

Conclusion

The findings of this study suggest that antimicrobial resistance in Campylobacter spp. is present in milch animals in Chennai, with distinct resistance patterns observed between C. jejuni and C. coli. Additionally, variations in antimicrobial resistance were noted among Campylobacter isolates from milk samples collected from cows in different zones

References

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How to cite this article

A. Elango, T.R. Pugazhenthi and V. Jayalalitha (2022). Antibiotic Resistance Profiles of Campylobacter species Isolated from Raw Milk Sold by Street Vendors in Chennai. Biological Forum – An International Journal, 14(1): 1842-1846