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Q: Describe the mode of action of V. cholerae on thesmall intestine in the body.
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Q: Describe how cholera can be prevented and how it is treated
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Compare the gastroenteritis caused by Vibrio cholerae with that of Campylobacter jejuni. How are they similar and different?
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- Compare the mechanism of virulence for Vibrio cholerae and enterotoxigenic E.coli. Specifically, how do these bacteria bind to host cells and what factors are involved in producing the diarrhea observed in infected patients?Which of these statements concerning the causative agent of listeriosis is false?a) It can cause meningitis during the first month of life.b) It is a Gram-positive rod that can grow in refrigerated food.c) It is usually transmitted by the respiratory route.d) Infection can result in bacteremia.e) It is widespread in natural waters and vegetation.Besides enterotoxin, does V. cholerae possess an endotoxin? If it does, is the toxin a significant virulence factor?
- How can we prove the pathological and clinical effects of cholera are caused by the production of enterotoxin?Describe the evidence linking Helicobacter pylori togastric ulcers. How can these ulcers be cured?How is S. enterica, the causative agent of typhoidfever, transmitted? What are the stages of typhoidfever?
- Helicobacter pylori causes O 1) duodenal ulcers. O 2) increased risk for stomach cancer. O 3) stomach ulcers. 3) 4) gastritis. 5) All of the choices are correct.What are the virulence factors of Salmonella typhi? Explain each factors in simple terms.All of the following are true about Clostridium tetani, thecausative agent of tetanus, EXCEPT:(a) They are spore-forming rods.(b) They are part of the normal bowel microflora of horses,cattle, and humans.(c) They produce a powerful exotoxin that mediates thedisease.(d) Their toxin elicits muscle stiffness, spasms, and paralysisin the victim.(e) They require oxygen to survive.
- Describe the virulence factors of H. pylori that allow it to colonize the stomach and survive phagocytosis.Describe the following in Corynebacterium diphtheriae infections (a) ToxigenesisAll of the following pertain to listeriosis, except 1) intrauterine infection usually results in fetal death. 2) enterotoxin of the organism causes symptoms. 3) it causes a serious septicemia and meningitis in the elderly, immunocompromised, and infants. U 4) it causes symptoms of fever, diarrhea, and sore throat. 5) adequate pasteurization and thorough cooking of food can improve prevention.