II. Definition

  1. Derived from Staphyle (Greek for bunch of grapes)

III. Characteristics

  1. Gram Positive Cocci
  2. Forms irregular clusters
  3. Facultative Anaerobe
  4. Beta hemolytic
  5. Non-spore forming
  6. Glucose fermentation
  7. Catalase positive
  8. Size: 0.7 to 1.2 microns

IV. Organisms

  1. Coagulase-Positive Organisms
    1. Staphylococcus aureus
  2. Coagulase-Negative Organisms
    1. Staphylococcus epidermidis (IV catheter infections)
    2. Staphylococcus saprophyticus (UTI in women)

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