Catarrhalis Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Catarrhalis and links to relevant pages within the course.
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| A 25 year-old female presented in the emergency room with an acute urethral discharge of 2 days duration. A smear for gram stain was obtained (see accompanying image). Many polymorphonuclear leukocytes and intracellular and extracellular gram negative diplococci were observed.
Based on the clinical history and the gram stain observation, a diagnosis of gonorrhea can be made. | View Page |
| The positive oxidase reaction as shown in the photograph (yellow arrow) rules out the following two look-alike organisms of N. gonorrhoeae: | View Page |
| The Superoxol Test Superoxol is an additional spot test that may be helpful in the presumptive identification of N. gonorrhoeae.Superoxol is 30% hydrogen peroxide, in contrast to the 3% solution that is used in the catalase test.Other Neisseria species and Moraxella catarrhalis are either negative for this test or give a weak, delayed reaction. | View Page |