A throat culture grows normal oropharyngeal microbiota. The coagulase test for the organism is positive. What...
A throat culture grows normal oropharyngeal microbiota. The coagulase test for the organism is positive. What is the genus and species of the organism?
1. Staphylococcus
aureus
2. Streptococcus agalactiae
3. Streptococcus pyogenes
4. Staphylococcus epidermidis
Homework Answers
1. staphylococcus aureus
pharynx is called throat : these contains 3 parts oropharynx and nasopharynx, laryngopharynx or hypopharynx .
oropharyngial microbiota is major reservoir for infections.
aureus produce two types of coagulases. that is free coagulase and bound coagulase.
coagulase test organism is Positive ....in this test produces coagulase enzyme with catalyzes the conversion of soluble fibrinogen in plasma to insoluble fibrin.
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A throat culture grows
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Case Study
#1
Clinical
history: An HIV positive male presented in clinic with
confusion and disorientation. He had a fever 38.5°C and
photophobia. His CD4 T cell count was 80/ul. An MRI and lumbar
puncture were performed. The MRI showed various small lesions
within the brain. CSF analysis indicated 32 White Blood Cells/ul
with 89% lymphocytes, and 6% monocytes, glucose of 22mg/dl, and
protein of 89mg/dl. Gram stain showed yeast and India ink negative
stain showed a thick capsule.
Image...
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