Escherichia coli bacteria, illustration - stock illustration

Escherichia coli bacteria in blood, computer illustration. E. coli is a gram-negative motile bacterium which lives in the intestines as a part of its normal microflora. However, some strains can cause diarrheal infections and infections outside of the intestine, such as bacteraemia (bacteria in blood), peritonitis, cystitis, wound infections, nephritis, gynaecological infections, and meningitis in newborns.