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?
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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?
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- What are the gastrointestinal symptoms associated with H. Pylori infection and how was this infection contracted?What might be a reason why a Buruli ulcer is initially painless? Why was it necessary to administer antibacterial drugs for two months rather than two weeks? What environmental similarities exist in the endemic countries?What foods are commonly implicated in cases of listeriosis?
- 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?Which bacteria in the Family Enterobacteriaceae are true entericpathogens and which ones are opportunists?How is a Balantidium coli ulcer differ pathologically from an amoebic ulcer?