From Perplexity: HIV viral load as biomedical optical illusion.
Rebecca Culshaw and Kary Mullis’s critique of HIV “viral load” can be summarized as considering it a biomedical optical illusion because they fundamentally challenge whether viral load tests truly measure the presence of active HIV virus in the body, asserting the results may reflect something quite different or misleading rather than actual viral particles. Core Critiques of Viral Load Both Culshaw and Mullis argue that viral load tests—for HIV, typically based on PCR or RT-PCR—do not detect whole, infectious viruses but instead amplify fragments of genetic material that could originate from multiple sources, including non-infectious viral remnants, cellular debris, or artifacts produced during laboratory processing. Mullis, the inventor of PCR, repeatedly emphasized that this technique is highly sensitive but cannot by itself distinguish between active infectious viruses and unrelated genetic sequences. Culshaw builds on this critique, noting that the correlation between “viral...