I would be worried about that but the WPI continues to say they can find XMRV in the blood, I even tested positive through the VIPdx blood test, which the results seem to be almost random among CFS patients. Dr. Singh even tired to use WPI's test used in the Science study and was unable to find XMRV. Singh tried everything she could think of to try and find XMRV in the blood, nine different tests which all came up negative and she should know she has been studying XMRV for years. So to attack the study for not looking in other tissue when the WPI says it is present in blood is disingenuous.
Just like i don't take this latest study by Dr. Singh as the last word, i don't take what the WPI says as being proven yet. For example, i don't call WPI positives "known" positives at this point. Not before they can correctly identify blinded samples provided by a third, trusted party.
Can you tell us more about the distribution of results from VIPDx's blood test? That would be interesting.
Like i said in the post before, at this moment things don't make sense. Before the picture makes sense, i think it would be just plain stupid to declare the case closed. It is possible the WPI are better able to find XMRV/MRV in the blood than Dr. Singh. And it is also possible there's no XMRV/MRV in the population at all. We have to find out.
If this latest study is correct, what is not possible, is that XMRV exists everywhere, at a low level, not associated with disease.
The WPI have said more than one time, i think, that the blood is not a good place to look for MRV.
If in the town where you live, a number of children have disappeared misteriously and there were signs that they could have been murdered and other signs that they could just have run away, but it was clear that it's not possible to say yet, which of both alternatives is true, because the signs are contradictory, would you let your 5 years old daughter go out and play alone at night?
I want to be sure what XMRV/MRV does.