Researchers have shot another arrow through the credibility of claims that a virus likely causes chronic fatigue syndrome (CFS).This time, results from nine different labs around the United States failed to differentiate patients with CFS from healthy controls solely on the basis of whether they tested positive for xenotropic murine leukemia virus-related virus (XMRV).The study was published in the Sept. 22 online issue of Science, along with a partial retraction from the authors of the 2009 … [Read more...]