The general public takes for granted the link between an infectious agent and a given infection Discuss the requirements established by Koch, the nineteenth-century German scientist, before ascertaining, for instance, that Helicobacter pylori bacterium is the cause of the gastric ulcer. Why is it so essential to meet these conditions?
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The general public takes for granted the link between an infectious agent and a given infection
Discuss the requirements established by Koch, the nineteenth-century German scientist, before ascertaining, for instance, that Helicobacter pylori bacterium is the cause of the gastric ulcer. Why is it so essential to meet these conditions?
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- Mutant strains of Helicobacter pylori that lack the ability to produce urease fail to cause infection when they are swallowed. Infection occurs, however, if a tube is used to introduce them directly into the layer of mucus that overlies the stomach epithelium. What does this imply about the role of urease in the bacterium’s pathogenicity?The listeriosis outbreak during 2017 and 2018 in South Africa was attributed to the consumptionof deli products such as polony and viennas. In your view, what possible factors attributed to theoutbreak?If there is a causal relationship between the presence of H. pylori and ulcers, how might you explain that 50% of the patients with a normal endoscopic examination were infected with the bacteria?
- Methicillin-resistant Staphylococcus aureus is which of the followinonly spread through sneezing.the causative agent of pseudomembranous colitis.only found in someone who is ill.present in at least 10% of people's skin, mouth or nose.In 2005, J. Robin Warren and Barry J. Marshall shared theNobel Prize in Medicine for discovering the bacteriumHelicobacter pylori and for establishing experimental proofthat it plays a major role in gastritis and peptic ulcer disease.The story began when Warren, a pathologist, noticed thatbacilli were associated with the tissues taken from patientssuffering from ulcers. Look up the history of this case and describeWarren’s first hypothesis. What sorts of evidence did ittake to create a credible theory based on it?Antimicrobial therapy can decrease the amount of susceptible bowel flora and allow proliferation of relatively resistant colonic bacteria. Which one of the following species can proliferate and produce a toxin that causes diarrhea?- a.Enterococcus species b.Staphylococcus epidermidisC.Pseudomonas aeruginosad.Clostridium difficilee.Bacteroides fragilis
- I am having trouble understanding and explaining how I should explain this in lamen terms and which sources can be used to help. Report on : Enterobacter aerogenes Part II – Describe the purpose of identifying unknown bacterial cultures in medical field. Name the step by step experiments/procedures that microbiologists follow in order to identify microorganisms. Part III - MethodsIn this section you are describing in detail all the tests that is done to identify the unknown organism. Gram Stain: Explain differences between gram-positive and Gram-negative organisms. Why One group will end up being purple and another group will be a different color. Very briefly describe the steps of Gram stain. Describe the appearance of your organism under the microscope (shape, color). Tests to identify Gram-negative organisms: List the name of organisms that you are considering. Describe all the tests in the logical and orderly manner. Start by writing the chemical equations; (ALL OF THE CHEMICAL…Why might the Yersinia pestis from a patient with pneumonic plague be more dangerous than the same organism from fleas?East Indian natives habitually chew on betel nuts as an alkaloidalstimulant and narcotic. A side effect is phlegm collection, which iseliminated by frequent spitting. The incidence of Strongyloides infections is relatively low in this population. Can you account forthis? (No, the betel nuts are not effective antihelminthics.)
- Explain how and why antibacterial treatment for tuberculosis differsfrom that for other bacterial pathogens.As a result of the injury, the patient developed erysipelas on his leg. From the anamnesis it became clear that he had chronic tonsillitis. 1. What etiology should a doctor suspect? 2. What material from the patient is to be examined in the bacteriological laboratory? 3. On the basis of which laboratory diagnostic methods can establish a link between erysipelas and carriers of streptococcus in the throat? 4. On the basis of what criteria will the selected culture be identified?Bacterial (e.g., S. pneumoniae) pneumonia is commonly manifested by a cough productive of sputum, whereas with atypical (e.g., Mycoplasma pneumoniae) pneumonia, the cough is usually nonproductive or absent. Explain.