Campylobacter Species Characteristics
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Questions and Answers

What is one of the additional tests used for further identification of Campylobacter species?

  • Glucose fermentation test
  • Urea test
  • Nitrate reduction test (correct)
  • Catalase test
  • Which of the following tests is NOT used for further identification of Campylobacter species?

  • Oxidase test
  • Catalase test
  • Urease test (correct)
  • Nitrate reduction test
  • What is the purpose of using additional tests like nitrate reduction for Campylobacter species?

  • To detect the presence of bacterial toxins
  • To detect the presence of bacterial Capsule
  • To determine the level of bacterial resistance
  • To identify the specific species of Campylobacter (correct)
  • Which of the following is a characteristic of Campylobacter species that can be identified using additional tests?

    <p>Oxidase-positive reaction</p> Signup and view all the answers

    Why are additional tests like nitrate reduction necessary for Campylobacter species identification?

    <p>Because they require further biochemical characterization</p> Signup and view all the answers

    From which source can a fetus occasionally be recovered?

    <p>Blood cultures</p> Signup and view all the answers

    Which type of patients are more likely to have a fetus recovered from their blood cultures?

    <p>Elderly and immunocompromised patients</p> Signup and view all the answers

    What is the primary purpose of blood cultures?

    <p>To identify bacterial infections</p> Signup and view all the answers

    In which circumstance is it possible to recover a fetus from blood cultures?

    <p>In cases of suspected infection</p> Signup and view all the answers

    What is the significance of recovering a fetus from blood cultures?

    <p>It indicates a possible infection</p> Signup and view all the answers

    What is the primary cause of illness associated with C. jejuni?

    <p>Diarrhea</p> Signup and view all the answers

    Which of the following Campylobacter species is the most commonly isolated from humans?

    <p>C. jejuni</p> Signup and view all the answers

    Which of the following is NOT a species of Campylobacter that is less commonly isolated from humans?

    <p>C. jejuni</p> Signup and view all the answers

    What is the role of C. jejuni in human disease?

    <p>It is a very common cause of diarrhea</p> Signup and view all the answers

    Which of the following statements about Campylobacter species is TRUE?

    <p>C. jejuni is a common cause of diarrhea, while other species are less commonly isolated</p> Signup and view all the answers

    What is the purpose of collecting blood samples in the diagnosis of H. pylori?

    <p>To determine serum antibodies</p> Signup and view all the answers

    What type of samples are collected for H. pylori antigen detection?

    <p>Stool samples</p> Signup and view all the answers

    What is the significance of detecting serum antibodies in H. pylori infection?

    <p>It confirms the diagnosis of H. pylori infection</p> Signup and view all the answers

    Which of the following samples is not used for H. pylori antigen detection?

    <p>Blood samples</p> Signup and view all the answers

    What is the relationship between H. pylori and serum antibodies?

    <p>Serum antibodies are produced in response to H. pylori infection</p> Signup and view all the answers

    Where is the tissue for culture typically obtained from?

    <p>Gastric mucosa</p> Signup and view all the answers

    What procedure is used to obtain tissue for culture from the gastric mucosa?

    <p>Endoscopy and biopsy</p> Signup and view all the answers

    What is the source of the tissue used for culture?

    <p>Gastric mucosa</p> Signup and view all the answers

    What is the purpose of obtaining tissue from the gastric mucosa?

    <p>To diagnose a bacterial infection</p> Signup and view all the answers

    What is the method used to obtain tissue from the gastric mucosa for culture?

    <p>Endoscopy and biopsy</p> Signup and view all the answers

    Study Notes

    Campylobacter Species

    • C. jejuni is the prototype organism and a common cause of diarrhea in humans.

    Other Campylobacter Species

    • C. fetus, C. coli, and C. Follow are less commonly isolated from humans.

    Morphology and Identification

    • Nitrate reduction test is used for further identification of Campylobacter species.

    C. fetus

    • May occasionally be recovered from blood cultures, usually from immunocompromised or elderly patients.

    Diagnostic Laboratory Tests

    • Blood is collected for determination of serum antibodies.
    • Stool samples may be collected for H. pylori antigen detection.
    • Tissue for culture is obtained by endoscopy and biopsy of the gastric mucosa.

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    Description

    This quiz covers the characteristics and identification of Campylobacter species, including C. jejuni and C. fetus, as well as diagnostic laboratory tests.

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