Jeonghwan Jang

TL;DR: Current knowledge on the ecology of E. coli strains in various environments with regard to its role as a faecal indicator bacterium (FIB) and as a naturalized member of indigenous microbial communities is examined.

TL;DR: A new library-dependent MST method that uses pyrosequencing-derived shared operational taxonomy units (OTUs) to define sources of fecal contamination in waterways and indicated that analysis of shared OTUs derived from barcoded pyro sequencing reads provide the necessary resolution and discrimination to be useful as a next generation platform for microbial source tracking studies.

TL;DR: E. coli strains in phylogenetic group B2 were rarely found in humans and domesticated animals in Jeonnam Province, South Korea, and that the majority of strains containing virulence genes belonged to phylogenetics group B1 and were isolated from beef cattle.

TL;DR: Findings suggest that restriction of the use of antibiotics in food animal operations in South Korea, especially those involved in poultry and swine production would be desirable.

TL;DR: Results from this study indicate that the Yeongsan River basin has been contaminated with antibiotic- resistant and potential pathogenic E. coli strains and suggests the need for further investigations of antibiotic-resistant pathogens to prevent public health impacts in the Yeongsan River basin.