Non-Commissioned Officer (NCO) Immunity Master Practice Exam

An acquired immunodeficiency syndrome (AIDS) diagnosis is defined primarily by specific clinical criteria and laboratory findings, particularly the CD4+ T-cell count. For a diagnosis of AIDS, a CD4+ T-cell count of less than 200 cells/mm³ is decisive, in conjunction with being HIV positive.

In the correct scenario, the reported CD4+ T-cell count is 200 cells/mm³ and the individual is confirmed to be HIV positive. This level of CD4+ T-cells indicates significant immune compromise, which aligns with the World Health Organization (WHO) and Centers for Disease Control and Prevention (CDC) guidelines for diagnosing AIDS. Individuals with CD4+ counts below this threshold are at increased risk for opportunistic infections and other complications related to HIV.

The other options present higher CD4+ counts, which, while indicating that the individual is HIV positive, do not meet the criteria for an AIDS diagnosis. A person with a CD4+ count above 200 cells/mm³, regardless of their HIV status, would typically be considered to have a less advanced stage of HIV infection, unless they exhibit certain opportunistic infections or conditions defined in the clinical criteria for AIDS.