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Study fails to show link previously found between virus and chronic fatigue syndrome

BMJ 2010; 340 doi: http://dx.doi.org/10.1136/bmj.c1033 (Published 19 February 2010) Cite this as: BMJ 2010;340:c1033
  1. Susan Mayor
  1. 1London

    A UK study analysing samples from patients with chronic fatigue syndrome has found no evidence of a link with a retrovirus (XMRV), according to results published this week that question a theory linking the virus to the condition.

    Patients with chronic fatigue syndrome, also known as myalgic encephalomyelitis, often report that their condition—a mix of symptoms including extreme fatigue—began after an otherwise normal viral infection. The xenotropic murine leukaemia virus-related virus (XMRV) was found in 67% of patients with chronic fatigue syndrome in a study reported last year (Science 2009,326:585-9). The retrovirus has also been found in some studies in men with prostate cancer, although …

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