Based upon the Classification System for HIV Infection and Expanded AIDS Surveillance Case Definition for Adolescents and Adults criteria,
identify the clinical category for the patient with a CD4+ T-lymphocyte count of 450 cells/mm3 of blood with no symptoms of an HIV infection.
A) A1
B) A2
C) B1
D) B2
Ans: B
Feedback: The patient will be placed in the clinical category A2. In clinical category A, the patient may be asymptomatic or have persistent generalized lymphadenopathy or acute primary HIV infection. In the A2, B2, or C2 categories patients have a CD4+ T-lymphocyte count ranging from 200 to 499 cells/mm3 of blood. This patient does not fall into the A1, B1, or C1 clinical category, as CD4+ T-lymphocyte counts in these categories ? 500 cells/mm3 of blood. Furthermore, patients in the B clinical categories exhibit a number of clinical symptoms such as listeriosis, herpes zoster, cervical dysplasia, and candidiasis.
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