the following information is not yet verified
Taxonomy
Family: Enterobacteriaceae, genus: Escherichia coli
E. albertii, E. fergusonii, E. hermannii, E. vulneris
Natural habitats
Widely distributed in nature, water, soil, foods and clinical samples.
The genus Escherichia will occupy the last part of the small intestine and the large intestine in humans and warm-blooded animals. In more than 99% of the isolates, it is a Escherichia coli.
E. coli is a good indicator of the water it is clean. (fecal contamination)
Clinical significance
They are generally located in the intestinal lumen (colon), but some strains can cause a variety of infections, enteritis, septicemia, peritonitis, urinary infections, meningitis (neonatal) etc, in humans and animals.
the following information is not yet verified
Gram negative rods,
1.1-1.5 x 2.0-6.0 µm.
They occur singly or in pairs
Facultative anaerobic
Colonies may be smooth (S-type), low convex, moist and gray with a shiny surface, entire edge. R-type or mucoid forms may occur.
Some strains are β-hemolytic.
McConkey
lactose fermenter: colonies are flat, dry and pink
non lactose fermenter: colonies are pale
BBAØ growth