He said because a large number of CFS patients had shown to be positive for XMRV as per the Science paper. That with that high of numbers causality would definately need to be looked at. He also felt that other pathenogens could be involved in other cases.
I wonder if he meant because diagnosis is so sloppy (no blood tests for specific immune markers, some criteria not using PEM etc.) or whether even in well-defined cases, there might be some other cause?
He said WPI is now finding it in 90 percent and has been using multiple tests. I think that's a high number of ME/CFS patients. And yes there is also the broad definition of CFS. Thanks to the CDC. He also said the level of concern is very high. He said what caught the blood groups attention was the 3.7 XMRV DNA in healthy controls. I took notes.