Escherichia Coli Research Papers

Escherichia coli (E. coli) is a bacterium commonly found in the digestive system of humans and animals. Although it is mainly harmless and helps promote a healthy digestive system, some strains can be pathogenic and cause illness such as diarrhea, urinary tract infections, respiratory infections and even pneumonia. What makes E. coli pathogenic is the release of a toxin called Shiga. These are often referred to a Shiga toxin-producing E. coli (STEC). This particular strain lives harmlessly in the guts of animals, particularly cattle. However, when in contact with a human, it results in illness. Pathogenic E. coli is usually caught when humans ingest invisible amounts of feces that can be found in food or water. (CDC, 2014) Antibiotics may be prescribed depending on the illness. Their ability to effectively work depends on it’s composition and the bacteria it is expected to work on.

9. After the 48 hour time period the inhibition of the Escherichia coli bacteria around the disinfectant disks was measured. A ruler was used to measure the clearing from the edge of the disk to the perimeter of the clearing. Irregularities in the clearing were not included in the area of clearing.

Escherichia coli are gram negative, rod shaped bacteria that are often used in laboratory studies and are usually harmless, residing in the human digestive tract as part of the normal flora. E. coli 0157:H7 is a pathogenic strain of E. coli that was first identified as a cause of disease in the United States in 1982, during an investigation into an outbreak of gastrointestinal illness. The organism is also called enterohemorrhagic E. coli (EHEC) because it causes abdominal pain with diarrhea that may contain blood. It lives in the intestines of healthy cattle and can contaminate meat during slaughter. It is believed that the widespread use of antibiotics by American farmers has

2. List what it is caused by (specific scientific and common names of the organism: Escherichia coli

The Kirby-Bauer antibiotic tests indicated that the unknown is susceptible to chloramphenicol and ampicillin and resistant to penicillin G and tetracycline. The disinfectant sensitivity tests indicated that C. Freundii is resistant to all four of the disinfectants.

The orgimsms involved in Escherichia coli 0157 is an anaerobic bacterium which is shaped like a rod and is Gram-negative. Escherichia is a foodborne pathogen which causes a variety of disease in humans worldwide. Cattle are the reservoir to the diseases. Between 1% and 50% of healthy cattle carry or shed E.coli by means of their faeces. The cattle can also contract the infection after slaughter as conmtanation can occur during slaughter or while the beef is being proceed into products suitable for human consumption. In the United states the most common way of transmission of the disease is through consuming contaminated food and water. Although it is also frequently spread from person to person impartial in communities where there is a high concentration of children such as child care services and primary schools.

Esherichia coli also known as E. coli is a bacterium that lives in your gut. (1). it was founded by Theodore von Esherich in 1888. There are many people that can get the bacteria. Also there are thousands of strands of E.coli. Six E. coli O157 outbreaks were identified during 2007. Four of the outbreaks involved foodborne transmission. (Eshericha Coli). Six Minnesota cases and one Wisconsin case with the same or closely-related PFGE subtype of E. coli O157:H7, and an additional Minnesota case of Shiga-toxin producing E. coli that was not culture-confirmed, attended the Minnesota State Fair in August. All but one of the cases showed cattle or visited the cattle

All people are at risk of contracting the E. coli disease but some are at a higher risk than others. A person is at risk when they swallow the bacteria through food or water that is infected with the E. coli bacterium. Eating meat that is undercooked or consuming unpasteurized milk and raw milk products can also put a person at risk for the disease (Lim et al., 2010). People with low immune systems, the very young and elderly are very susceptible to contracting E. coli infection (Lim et al., 2010). Then people who are exposed to poor water systems and contaminated environments where E. coli bacterium can survive are also at high susceptibility to contract the disease (Lim et al., 2010). When a person is infected with E.coli disease there is a period of time before symptoms starts to appear. Each case is different and symptoms vary. Once a person is exposed to this bacterium, then incubation begins. The time period for incubation is approximately a period of two to ten days. However the whole disease, barring serious complications and

Life History and Characteristics: Staphylococcus aureus is a gram positive bacterium that is usually found in the nasal passages and on the skin of 15 to 40% of healthy humans, but can also survive in a wide variety of locations in the body. This bacterium is spread from person to person or to fomite by direct contact. Colonies of S. aureus appear in pairs, chains, or clusters. S. aureus is not an organism that is contained to one region of the world and is a universal health concern, specifically in the food handling industries.

What exactly is E.coli poisoning? What is the origin of e.coli? I always had these question in mind and decided to do this research on this topic because it has always been a subject during these past few years and it's becoming a topic over the news. As I was doing my research on the topic is then when I knew that the name E.Coli that we always see wasn’t the actual name of it. Its name is called Escherichia Coli and that there a few different types of e.coli which I never even knew of. I never thought of what could happen if someone gets infected with e.coli or how cautious we should be trying to stay away from it. Is it also something not just us to prevent it but also the way it gets into the foods we eat. It’s best to know and understand how it could become a big issue even if you are careful with how to handle it. How do actually keep e.coli away from us how should the government make sure the rates of food contamination decrease?

I had recently experienced the terror that is referred to as E. Coli. I can tell you all about how it is much worse than the flu, although I will also be talking about this one girl I stumbled upon on the internet also. She had a life threatening experience that you can definitely experience if you go untreated when finding out that you have E. Coli. She had it for 19 days straight when I had been extremely lucky that I had only had it for eight days. I know that I definitely did not feel lucky, but doing this project has let me realize that I was very fortunate. Some people just chalk it up as the stomach flu like my mother and aunt did, but my grandmother knew it was something more than that. She ended up taking me to Med Express which is not a very good place to go if you want to get a work release on the same day or week by the way. On top of the issues I had at the doctor it was nonstop viral- like symptoms that only got worse until they got better.

Most e coli do not affect people and actually are a very important part of keeping people healthy especially in the intestinal tract. Although there are some e coli that are pathogenic this means that they cause illness this is done either by giving people diarrhoea or illness that is outside the intestinal tract. These types of e coli that cause diarrhoea are usually transmitted through contaminated water ,food, or contact with animals or persons. E coli kill people by causing dehydration from diarrhoea and vomiting. E coli are considered gram negative bacteria. Colonies of e coli are circular in shape as well as having an entire margin it is also raised and size is considered punctiform (small). The texture of the colony is also smooth and the appearance is shiny and is no pigmented (colourless) as well as being

According to Kibret, et.al (2011) Escherichia coli is known to be the natural bacteria that can be found human and animal gut. Thus, this bacteria can be found in water, soil and vegetation. This bacteria can cause a lot of different diseases from Urinary Tract Infection to blood stream infections, wounds, otitis media. This bacteria is known for being the cause of having a food and water-borned human diarrhea, which is nowadays, it is currently growing in the developing countries, causing many deaths in children under the age of five

Ward claimed she was in a public bathroom when she held a Petri dish up to a Dyson hand dryer for 3 minutes before she let it incubate for about 48 hours and watched the bacteria grow, according to ABC Action News.

Escherichia coli are commonly found in lower intestine of warm blooded animals. Most E. coli are harmless. The bacteria can be grown easily and its genetics are relatively simple and easy to study, making it the best-studied prokaryotic organism. Certain strains of E. coli can produce toxins that can cause food poisoning when eating unwashed vegetables. (Wikipedia, 2010)