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US scientists claim chronic fatigue syndrome breakthrough

By Ian Quinn

US scientists claim to have made a potentially crucial breakthrough in the battle to find what causes chronic fatigue syndrome (CFS) or ME.

Research, published in the journal Science, suggests that a single retrovirus known as XMRV could be behind the condition, estimated to affect 17 million people worldwide.

They found the virus in 67% of ME patients compared to under 4% of the general population, raising hopes of new treatments.

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