Escherichia coli

General Information

Fermenting gram negative rod, of the Enterobacteriaceae family

Normal GI flora.

Most predominant gram negative bacillus.

Women’s Health: The most common cause of pyelo-nephritis in pregnant women. In addition a common cause of gram negative bacteremia in women with fever in labour/chorioamnionitis.

An exhaustive list.

Most common cause of UTI.

Also common:

  • Intra-abdominal infection/abscess

  • Nosocomial pneumonia

  • Bacteremia

  • Prosthetic device infection

  • Gastroenteritis, ranging from travelers diarrhea to invasive infection with hemolytic-uremic syndrome

  • Myriad other manifestations

  • Note endocarditis is rare.

  • Pyelonephritis

May require contact precautions if highly resistant i.e. ESBL, carbapenem resistant.

Treatment of choice for ESBL strains is a carbapenem.