Antibiogram Status of Bacterial Isolates from Air Around Dumpsite of Ekiti State Destitute Centre at Ilokun, Ado-Ekiti, Nigeria

An investigation of the bacteriological quality of air around a municipal refuse dump in Ado-Ekiti, Nigeria was conducted to assess the bacteriological contamination of air and also to assess the ambient air quality of the closest neighbourhood to the dump site. The microbial concentration of air around the dump site was measured using the “passive method” that involved exposing sterile Petri dishes containing nutrient agar to the air for about five minutes. The exposures were carried out on separate days at some locations close to the dump site viz; the dumpsite, about 50m away from the dumpsite, and at the nearest neighbourhood which is about 100m away from the dumpsite. The microbes at the neighbourhood with mean value of 137.4 CFU/p was in most cases higher than the microbes at the dumpsite with mean value of 124.4 CFU/p. The bacterial distribution in the air revealed, 37% of Escherichia coli, 19% of Klebsiella spp, 13% of Pseudomonas spp, 15% of Serratia spp, 8% of Staphylococcus spp, 7% of Enterococcus spp and only 1% of Salmonella sp. The pattern of resistance of the bacterial isolates were Ceftazidime (87.7%), Cefuroxime (82.2%), Gentamicin (89.0%), Cefotaxime (84.9%), Ofloxacin (90.4%), Amoxicillin (95.9%), Augmetin (93.2%), Nitrofurantoin (93.2%) for the Gram negative bacteria, while, the percentage of resistant Gram positive isolates is as follows: Tetracycline (84.6%), Sulfamethoxazone (61.5%), Erythromycin (84.6%), Fusidic acid (69.2%), Gentamicin (61.5%), Clindamycin (30.8%), Penicillin (100%) and Trimethropin (92.3%). This research work revealed the relevance of an Environmental Microbiology Department in any Governmental Waste Management System and the potential hazard of the open dump system of waste disposal around residential area.