Question about the numbers in healthy controls

[Samuel Wales]

"Mikovits believes the association may be even stronger than the
present work indicates. DNA sequencing only picks up active
infections, she says, so she wants to study CFS exposure to the virus
more broadly. In an unpublished investigation, she and her colleagues
analyzed blood cells in about 330 CFS patients and found that more
than 95% expressed antibodies to XMRV, whereas about 4% of healthy
controls did. " --

It seems that we have among sufferers, 67% of DNA and 95..98% of
antibodies, while in healthy controls, we have 3.7% DNA and only
slightly more of antibodies.

Why would healthy controls have such a small disparity between DNA and
antibodies? Using the same ratio, we would get 5.5% in healthy
controls. Or is this normal variation?

Thanks.

--
Q: How many CDC "scientists" does it take to change a lightbulb?
A: You only think it's dark. [CDC has denied ME/CFS for 25 years]
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Retrovirus: http://www.wpinstitute.org/xmrv/xmrv_qa.html