Aim: Salmonellosis is one of the most common and widely distributed foodborne illnesses in human, and multidrugresistance of Salmonella spp. has increased in developing countries with the indiscriminate use of antibiotics in the poultry production system. A cross-sectional study was conducted on randomly selected retail markets of Chittagong City Corporation to determine the prevalence and antimicrobial resistance pattern of Salmonella isolated from commercial layer eggs, eggshell surface, and egg-storing trays. Materials and Methods:Chicken eggs, egg surface, and egg-storing trays samples from the retail markets were collected for isolating Salmonella spp. (bacteriological culture methods) followed by antimicrobial susceptibility testing (disc diffusion method) against Salmonella isolates during the period from July to December 2013.Results: Out of the 310 layer eggs, egg surface, and egg-storing trays samples, the highest prevalence of Salmonella spp. was found in eggs trays (57.15%) and the lowest (13.33%) in eggs and the prevalence differed significantly (p<0.01). On the other hand, the prevalence was higher (45%) in samples of Pahartali bazar and lower (31.43%) in samples of Bohderhat bazar but the variation among the sites was not varied significantly (p>0.05). Isolated Salmonella was tested for resistance to eight different antimicrobial agents, using disc diffusion method. Among eight antimicrobial tested (n=111), 100% resistance were found to ampicillin and amoxicillin followed by erythromycin (60-100%), tetracycline (72-93%), ciprofloxacin (22-66%), colistin (27-66%), enrofloxacin (42-54%), and pefloxacin 23.07% across the study sites. Ciprofloxacin remained sensitive in 40.9% cases and, pefloxacin and colistin appeared to be almost sensitive (61-72%) against Salmonella isolates at studied areas. Salmonella isolates showed multidrug-resistance pattern up to five of the eight antimicrobials tested. Conclusion:It can be said that the rational use of antibiotics needs to be adopted in commercial poultry farming system of Bangladesh to prevent the emergence of drug-resistance Salmonella to protect the public health consequences.

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Aim: The oodles raising of zoonotic multi-drug resistance (MDR) Salmonella spp. during the last decade, especially in developing countries by repeated challenges resulting from increased and indiscriminate use of antimicrobials in food animals, fish and crop production, and human treatments is one of the dismal issues and might have a dire consequence in near future. The nascent MDR Salmonella may also find their way to commonly available street foods in Bangladesh. Therefore, it is imperative to find out the existence of MDR Salmonella in street foods of Bangladesh. Study Design:  We conducted a cross-sectional study to interrogate the prevalence of Salmonella spp. in street food items and the antimicrobial resistance pattern of isolated Salmonella spp. Place and duration of Study: The study was conducted from January to June 2016 in 5 street side markets (Agrabad, Colnel Hat, Alonkar Bazar, Bohderhat Bazar and Riazuddin Bazar) of Chittagong City Corporation (CCC) area of Bangladesh. Methodology: Standard microbiological methods were used for isolation and identification of Salmonella spp. from selected street foods. The antibiotic susceptibility tests were conducted by using disc diffusion method with commercially available 11 antimicrobials which are frequently used for medical and veterinary practices in Bangladesh. Results: Prevalence of Salmonella spp. were varied from 60% to 78% among the street food items. The study revealed MDR Salmonella (resistance up to 6 of 11 tested antimicrobials) from each of the food items tested. Concerning the degree of resistance, among the isolated Salmonella, the highest resistances (100%) were detected for Ampicillin and Amoxicillin and lowest for Pefloxacin (around 13%). Moreover, the degree of resistance of Salmonella to antimicrobials also varied among the various street food items.   Conclusion: The existence of MDR Salmonella notably a high rate in the street foods cues poor hygiene in street food production and it is a major threat for the advent of foodborne zoonoses.