December 22, 2011 The journal Science has withdrawn a study from 2009 that suggested an obscure virus causes chronic fatigue syndrome. The findings raised patients' hopes for effective treatments. But scientists who raced to confirm the viral link failed to do so.
September 22, 2011 Chronic fatigue syndrome is by all accounts a difficult illness – there's no known cause and consequently no test to detect it. Though a series of recent studies have shown there's no link with the XMRV virus, some advocates insist more research on it is needed.
September 5, 2011 The cause of the disease is still unknown, but researchers have found some treatments that may help. One psychiatrist says that when patients adopt a more positive attitude about their symptoms, it often translates into greater confidence and more energy.
May 31, 2011 New research findings suggest that a mouse virus thought by some to cause chronic fatigue syndrome is instead a laboratory contaminant. The results led a leading scientific journal to ask for a retraction of an earlier paper proposing the viral link.
December 20, 2010 Some DNA from mice may have contaminated samples of human blood and prostate tissue. Traces of the genetic code of the suspected virus, called XMRV, may have been in the mouse DNA.
August 23, 2010 Scientists Find Traces Of Virus In Chronic Fatigue Patients