摘要：The presence of bacteria indicative of faecal pollution or potential pathogen in water meant for drinking or other domestic activities is of public health significance. The problem is further complicated when these organisms exhibit multiple antibiotic resistant phenotype in addition to other virulent factors like biofilm. A total of 72 water samples were analysed for the presence of Escherichia coli and Salmonella spp by standard bacteriological methods, antibiotic susceptibility, curing and biofilm production. These include 30 from 10 brands of sachet water and 42 from 21 boreholes in seven different wards of Mubi. Thirty (41.7%) E. coli and 13 (18.1%) Salmonella spp were isolated in all the 72 water samples analysed. From these, 2 (6.7%) and 28 (66.7%) E. coli were isolated from sachet and borehole water samples respectively. All Salmonella spp were isolated from borehole water samples. Both Escherichia coli and Salmonella spp exhibit high and variable antimicrobial resistance to most of the tested antimicrobials especially amoxicillin-clavulanic acid (AMC), cotrimoxazole (SXT) and chloramphenicol (CHL). Resistant to all the antibiotics was not statistically different (P=0.172) between E. coli and Salmonella spp. Resistant markers in both E. coli and Salmonella spp were cured variably. Biofilm was produced by 76.7% and 53.8% E. coli and Salmonella spp respectively. There was significant correlation in antibiotic resistance between biofilm and non-biofilm producing strains of E. coli (P=0.044) and Salmonella spp (P=0.015). The results indicate the presence of bacteria spp of public health significance in two sources of water in Mubi which possibly exhibit plasmid mediated resistance in addition to biofilm production.
关键词：Prevalence; Salmonella; E. coli; Resistant; Biofilm; Water; Mubi
