The Intestinal Tract Of Human And Animals

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Bacteria are micro-organisms that inhabit and play a functional role in the intestinal tract of human and animals. (USA Government , 2012). The intestinal tract of humans is colonized by a complex range of micro-organism including Escherichia coli (E.coli) which exists as part of the natural flora of human gut. These micro-organisms have many beneficial functions including the production of vitamin K2 (MNT, 2013). Strains of E.coli are generally not pathogenic to humans except for toxigenic strains. E.coli O157:H7 is a toxic producing strain which causes abdominal pain, nausea, bloody diarrhoea and cramping. These symptoms are often associated with food poisoning caused by E.coli O157:H7. In healthy adult symptoms may last for 5-7 days however in high risk groups such as the young or elderly, disease may progress and effect kidney function commonly known a haemolytic uremic syndrome. (MNT, 2013). Many bacterial infections are treated with anti-bacterial agents such as antibiotics. However, due to the uncontrolled use of antibiotics, particularly the prescribing of antibiotics to treat common viral colds and flu, microbial resistance to antibiotic has dramatically increased. (The Health Gazette, n.d.). Scientist have warned that E.coli which has previously been sensitive to antibiotics, is becoming resistant to more antibiotics and in future could become as resistant to antibiotics like that of Methicillin Resistant Staphylococcus aureus (MRSA). In addition, there is a
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