Another comment from the same page from the Effect of Antiretroviral Therapy on HIV Transmission section.
Quote:


However, because HIV can be detected in the semen, rectal secretions, female genital secretions, and pharynx of HIV-infected patients with undetectable plasma viral loads (16,134--137) and because consistent reduction of viral load depends on high adherence to antiretroviral regimens, the clinician should assume that all patients who are receiving therapy, even those with undetectable plasma HIV levels, can still transmit HIV.


This has been obvious but I haven't seen it stated explicitly before: the viral load can be zero - a PCR DNA/RNA can be negative - and the person can in fact be contagious.

Put another way: a negative PCR DNA/RNA result does not imply HIV- or that the person is not contagious.

Let me know if I'm reading this wrong.
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