ANTIBIOTIC RESISTANCE PROFILE OF BACTERIAL PATHOGENS IN THE GUT OF P. AMERICANA
The study was conducted to determine the antibiotic sensitivity of various bacterial isolates including L. monocytogenes obtained from the intestinal content of P. americana captured from hospitals, domestic environments, restaurants and market places. The antimicrobial susceptibility of the bacterial isolates was determined by Kirby-Bauer disk diffusion method. Among the different groups of antibiotics, cephalosporins resistance was obvious in all the bacterial isolates under study. E. faecium, the most predominant isolate in the study, showed noticeable resistance to penicillin (39percent), erythromycin (35percent) and cloxacillin (32percent) apart from its cephalosporin resistance. Among the Gram negative isolates, though resistance to quinolones was not as apparent as cephalosprins, tendency to resist nalidixic acid was evident particularly in P. aeruginosa (79percent). Resistance to penicillin, nalidixic acid was noticed in all the Listeria species under study. The multidrug resistant bacteria carried by the omnipresent insect cockroach in their intestine as noticed in this study urges the necessity of further epidemiological studies for revealing the role of this insect in nosocomial infection and food spoilage.
P. americana, bacterial pathogens, antibiotic sensitivity
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