Research Article
Antimicrobial-Resistant Escherichia coli from Environmental Waters in Northern Colorado
Table 1
Relative abundances of total detected bacteria and E. coli by water source and by ESBL and KPC production.
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Data represent colony counts collected during membrane filtration; all data are presented as mean (±standard deviation). Abundance was measured as colony-forming units/100 mL. Plates with counts between 15 and 300 total CFUs were considered for analysis. CFU = colony-forming unit. BDL = below detection limit. ESBL = extended-spectrum beta-lactamase. KPC = Klebsiella pneumoniae carbapenemase. WWTP = wastewater treatment plant. Statistical differences () are noted between water sources with the following letters: asewer water and WWTP influent, bsewer water and WWTP effluent, csewer water and surface water, dWWTP influent and WWTP effluent, and eWWTP influent and surface water. |