Microbe Report on Escherichia coli Lab Example | Topics and Well Written Essays - 500 words

Microbe on Escherichia coli - Lab Report Example Most of the strains found in the gut are actually beneficial to the host by inhibiting the growth of other harmful bacteria and synthesizing vitamins, like K2. However, some serotypes can cause severe food poisoning in humans. One common strain, O157:H7, releases strong toxins, specifically enterotoxins, that damage and infect the host’s intestinal lining (Rasko, 2011). At times, a small colony of only 10-100 cells in enough to cause infections in children. The incubation period of these types of infection causing strains can range anywhere from a few hours to a week. The bacteria penetrate and thrive in the intestinal lining, eating away at the mucosa (Hayhurst, 2004). Symptoms of Disease: Symptoms usually manifest themselves in adults after 3-4 days of being infected consisting mostly of mild diarrhea, abdominal cramping and nausea. In severe cases the diarrhea can become bloody and the infection can cause kidney problems leading to pale skin, fever, chills, and bruising. Most healthy adults get better within a weak while for infants and young children it can take longer. In rare and extreme cases the virulent strain can also cause pneumonia, hemolytic uremic syndrome (kidney failure), and dehydration through diarrhea, eventually leading to death in young children and older adults (Hayhurst, 2004). Diagnosis: Usually the doctor carries out a physical examination and a medical history involving a series of questions about many of the symptoms. The questions will also try to determine travelling history, recently eaten foods, contact with contaminated foods and unpasteurized dairy products, and antibiotic use. The physical examination consists of checking the patient’s temperature, blood pressure, skin color, stomach tenderness and a rectal exam. If E. coli infection is suspected, the doctor will request a stool culture examination to determine the presence of the infectious strain and