Bacteriological analysis of indoor environment was carried out in some strategic indoor environments cutting across four different locations in Kebbi State University of Science and Technology, Aliero, Nigeria with the view to isolate and identify bacteria present in the indoor air. A total of twenty samples were collected during the cause of this study, out of which five samples were collected from each of the locations (Classrooms, Minimarkets, Hostels and Staff quarters). All samples were collected using settling plate methods. Enumeration of bacteria was carried out using the standard plate count; and the results revealed that the Student hostel harbored more bacteria (1.08 x 102 cfu/aqi) when compared with other locations. Staff quarters had the least bacterial counts (3.0 x 101 cfu/aqi). A total of six bacteria were identified which include Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus spp, Bacillus spp, Klebsiella spp, Micrococcus spp and Escherichia coli. Considering the fact that some of the isolated bacteria are associated with gastrointestinal tract infections (i.e. E. coli and Bacillus subtilis) and also respiratory tract infections (i.e. Klebsiella spp.), this may constitute a great health hazards to the populace.
Key words: Bacteriological, Health, Hazard, Indoor, Air, Quality
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