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Escherichia coli (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə ˈ k oʊ l aɪ / ESH-ə-RIK-ee-ə KOH-ly) is a gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms.
- EPEC
Escherichia coli (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə ˈ k oʊ l aɪ /...
- Gram-negative
Microscopic image of gram-negative Pseudomonas aeruginosa...
- Enterobacteriaceae
Enterobacteriaceae is a large family of Gram-negative...
- Salmonella Enterica
Salmonella enterica (formerly Salmonella choleraesuis) is a...
- Facultative Anaerobic
Functions. Facultative anaerobes are able to grow in both...
- EPEC
An example of a bacteriophage known to follow the lysogenic cycle and the lytic cycle is the phage lambda of E. coli. Sometimes prophages may provide benefits to the host bacterium while they are dormant by adding new functions to the bacterial genome , in a phenomenon called lysogenic conversion .
- Signs and Symptoms
- Bacteriology
- Transmission
- Diagnosis
- Prevention
- Treatment
- History
- Culture and Society
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E. coli O157:H7 infection often causes severe, acute hemorrhagic diarrhea (although nonhemorrhagic diarrhea is also possible) and abdominal cramps. Usually little or no fever is present, and the illness resolves in 5 to 10 days. It can also sometimes be asymptomatic. In some people, particularly children under five years of age, persons whose immun...
Like the other strains of the E. coli, O157:H7 is gram-negative and oxidase-negative. Unlike many other strains, it does not ferment sorbitol, which provides a basis for clinical laboratory differentiation of the strain. Strains of E. coli that express Shiga and Shiga-like toxins gained that ability via infection with a prophage containing the stru...
Infection with E. coli O157:H7 can come from ingestion of contaminated food or water, or oral contact with contaminated surfaces. Examples of this can be undercooked ground beef but also leafy vegetables and raw milk. Fields often get contaminated with the bacterium through irrigation processes or contaminated water naturally entering the soil. It ...
A stool culture can detect the bacterium. The sample is cultured on sorbitol-MacConkey (SMAC) agar, or the variant cefixime potassium tellurite sorbitol-MacConkey agar (CT-SMAC). On SMAC agar, O157:H7 colonies appear clear due to their inability to ferment sorbitol, while the colonies of the usual sorbitol-fermenting serotypes of E. coli appear red...
Avoiding the consumption of, or contact with, unpasteurized dairy products, undercooked beef, uncleaned vegetables, and non disinfected water reduces the risk of an E. coli infection. Proper hand washingwith water that has been treated with adequate levels of chlorine or other effective disinfectants after using the lavatory or changing a diaper, e...
While fluid replacement and blood pressure support may be necessary to prevent death from dehydration, most patients recover without treatment in 5–10 days. There is no evidence that antibiotics improve the course of disease, and treatment with antibiotics may precipitate hemolytic–uremic syndrome (HUS). The antibiotics are thought to trigger proph...
United States
The United States Department of Agriculturebanned the sale of ground beef contaminated with the O157:H7 strain in 1994.
Costs
The pathogen results in an estimated 2,100 hospitalizations annually in the United States. The illness is often misdiagnosed; therefore, expensive and invasive diagnostic procedures may be performed. Patients who develop HUS often require prolonged hospitalization, dialysis, and long-term followup.
1993 Jack in the Box E. colioutbreak1996 Odwalla E. colioutbreak2011 Germany E. coliO104:H4 outbreakEscherichia coliO104:H4E. coli: Protecting yourself and your family from a sometimes deadly bacteriumEscherichia coli O157:H7 genomes and related information at PATRIC, a Bioinformatics Resource Center funded by NIAIDFor more information about reducing your risk of foodborne illness, visit the US Department of Agriculture's Food Safety and Inspection Service website or The Partnership for Food Safety Education...Few non-scientists would be able to distinguish the E. coli virus bacteria from the HIV virus under a microscope. Artist Luke Jerram, however, can describe in intricate detail the shapes...
Feb 9, 2017 · In this review, we focus on Escherichia coli-derived virus-like particle based vaccines and vaccine candidates that are used for prevention (immunization against microbial pathogens) or...
- Xiaofen Huang, Xin Wang, Jun Zhang, Ningshao Xia, Qinjian Zhao
- 2017
Jul 12, 2023 · Escherichia coli is a facultative, enteric, Gram-negative, motile/flagellated, and lactose-fermenting rod that occur in the genus Escherichia and family.
People also ask
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Jan 16, 2024 · Microscopic colitis is swelling and irritation, called inflammation, of the large intestine. This large intestine is also called the colon. Microscopic colitis causes symptoms of watery diarrhea. The condition gets its name from needing to look at colon tissue under a microscope to diagnose it.
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