T/FA simple test for meningococcal disease is to press a tumbler (drinking glass) over the rash and if it does not blanch (fade or pale in color), immediate medical treatment should be obtained.
Added by Sarah B.
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Step 1: Observe the presence of a rash on the skin. Show more…
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Mycobacterium tuberculosis and Neisseria meningitidis can both cause life-threatening diseases. Imagine you are working in a microbiological laboratory and you receive a sample that could contain one of these pathogens. Explain what types of tissue could have been given to you for detection of either of these bacteria. Describe two laboratory assays that would be useful to determine which bacterium you are dealing with. Indicate which outcome of each assay would point to which bacterium. Explain what other test you would conduct before recommending the best treatment for the infection and why that is important.
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People are screened for tuberculosis using the tuberculin test. In this test, a protein from Mycobacterium tuberculosis is injected or scratched into the skin. If a person has active TB, latent TB, or even cured TB, they will show a positive reaction by producing a raised, allergic bump at least 10 mm in diameter. How large would this positive reaction be in inches?
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