Streptococcus Pyogenes Identification Tests
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Questions and Answers

Which test could aid in the identification of Streptococcus pyogenes?

  • Catalase test (negative)
  • PYR test (positive) (correct)
  • Oxidase test (negative)
  • Coagulase test (positive)
  • A B-hemolytic, catalase-negative, gram-positive coccus resistant to bacitracin and sulfamethoxazole is likely to be:

  • Group D streptococci
  • Group A streptococci (correct)
  • Enterococci
  • Group B streptococci
  • The CAMP test is based on enhanced hemolysis between CAMP factor and B-lysin from:

  • Staphylococcus epidermidis
  • Enterococcus
  • Streptococcus agalactiae (correct)
  • Staphylococcus aureus
  • A nonhemolytic, catalase-negative, gram-positive coccus that is PYR positive is also expected to be:

    <p>Both a and b</p> Signup and view all the answers

    The optochin test is most valuable in the identification of:

    <p>Both a and b</p> Signup and view all the answers

    Study Notes

    Identification of Streptococcus pyogenes

    • B-hemolytic, catalase-negative, gram-positive coccus resistant to bacitracin and sulfamethoxazole is likely to be Streptococcus pyogenes.

    CAMP Test

    • The CAMP test is based on enhanced hemolysis between CAMP factor and B-lysin from Staphylococcus aureus.

    Identification of Streptococcus pneumoniae

    • A nonhemolytic, catalase-negative, gram-positive coccus that is PYR positive is also expected to be Streptococcus pneumoniae.

    Optochin Test

    • The optochin test is most valuable in the identification of Streptococcus pneumoniae.

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    Description

    Test your knowledge of clinical bacteriology by identifying three tests useful for the identification of Streptococcus pyogenes. Explore key characteristics and diagnostic methods for this pathogen.

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