Query: NC_013508:3387272 Edwardsiella tarda EIB202, complete genome
Lineage: Edwardsiella tarda; Edwardsiella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: Edwardsiella tarda is a Gram-negative member of the normal gut microflora of fish, humans, chickens and other animals. This organism is also a serious pathogen of marine and freshwater fish and has been isolated from channel catfish, Japanese eels, flounder, tilapia, and other economically important fish. Infection by this organism is characterized by septicemia, internal abscesses, and skin lesions. This disease is often associated with poor water quality and mortality in aquaculture can be high. Edwardsiella tarda also causes opportunistic infections in humans, most commonly gastroenteritis and wound infections. However, this organism has been isolated from cases of septicemia and meningitis, primarily in immunocompromised patients.
Subject: NC_004668:191732 Enterococcus faecalis V583, complete genome
Lineage: Enterococcus faecalis; Enterococcus; Enterococcaceae; Lactobacillales; Firmicutes; Bacteria
General Information: This strain is one of the first vancomycin-resistant strains isolated. This isolate came from a blood culture derived from a chronically-infected patient in 1987 from Barnes Hospital in St. Louis, Missouri, USA. This strain was found to lack the cytolysin gene and a surface adhesin, Esp, that contributes to urinary tract infections. Mobile genetic elements make up one quarter of the genome. This genera consists of organisms typically found in the intestines of mammals, although through fecal contamination they can appear in sewage, soil, and water. They cause a number of infections that are becoming increasingly a problem due to the number of antibiotic resistance mechanisms these organisms have picked up. Both Enterococcus faecalis and Enterococcus faecium cause similar diseases in humans, and are mainly distinguished by their metabolic capabilities. This opportunistic pathogen can cause urinary tract infections, bacteremia (bacteria in the blood), and infective endocarditis (inflammation of the membrane surrounding the heart), similar to infections caused by Enterococcus faecium. Hospital-acquired infections from this organism are on the rise due to the emergence of antiobiotic resistance strains. Enterococcus faecalis produces a cytolysin toxin that is encoded on various mobile genetic elements, pathogenicity islands, and conjugative plasmids. The cytolysin aids in pathogenesis, possibly by causing destruction of cells such as erythrocytes, which allows access to new nutrients for the organism.