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Originally Posted by wallacesmum 
Combine that with the fact that HPV strains are showing up in tests of young children, meaning that there is no reasonable assurance that children who aren't sexually exposed will be HPV negative.
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Bingo. One of my favorite authors wrote a paper about West Nile Virus and was talking about how, if you examine only dead birds in search of a common "cause" of death, you may find something linking them. However, that is completely different from finding causation. If you examine healthy birds in addition to dead ones, you may find that they are all carrying that "deadly" "virus". Like saying that "This man died from the flu!" and disregarding the fact that he was 95 years old and smoked like a chimney. You can't blame a germ just because it is there at the time of the pathology. It may actually be a SYMPTOM of the pathology, not the cause.

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