PREVALENCE AND ANTIBIOGRAM STUDY OF PATHOGENIC BACTERIA FROM TABLE EGG

Abstract

The present study was carried out to isolate and identify the pathogenic bacteria from table egg with special emphasis to E. coli, Salmonella spp. and Staphylococcus spp. Techniques forward to isolate, identify and characterize the bacterial species by cultural, morphological, biochemical and staining. The antimicrobial susceptibility pattern of isolates were investigated by disc diffusion method. A total number of 40 eggs were collected from different markets of Dhaka, Bangladesh such as Krishi market, Bihari camp market, Agargaon market and SAU market. In Gram’s staining, the organism revealed gram-negative, pink color, small rod shaped appearance, arranged in single or paired short called E.coli, the organism revealed gram negative, short rod shaped, singly arranged called Salmonella spp., the organisms were found as gram positive grapes like clusters formed by cocci. E. coli from 14 samples, Salmonella spp. from 11 samples and Staphylococcus spp. from 7 samples were isolated from total of 40 samples that means (35.00%) were positive for E. coli ,(27.50 %) were positive for Salmonella spp. and (17.50%) were positive for Staphylococcus spp. The antibiotic sensitivity test indicated that the isolated E. coli were highly resistant to penicillin, erythromycin and amoxicillin; and were sensitive to tetracycline, ciprofloxacin and gentamycin. The isolated Salmonella spp. were highly resistant to penicillin, erythromycin and amoxicillin; and were sensitive to tetracycline, ciprofloxacin and gentamycin. Staphylococcus spp. were resistant against Neomycin, Vancomycin and were sensitive to ciprofloxacin, erythromycin, tetracycline and gentamycin.