US scientists say they have made a potential breakthrough in understanding what causes the condition known as chronic fatigue syndrome (CFS) or ME.
Their research in the journal, Science, suggests that a single retrovirus known as XMRV does play a role in ME.
They found the virus in 67% of ME patients compared to under 4% of the general population.
But experts cautioned that the study did not conclusively prove a link between XMRV and ME.
US scientists say they have made a potential breakthrough in understanding what causes the condition known as chronic fatigue syndrome (CFS) or ME.
Their research in the journal, Science, suggests that a single retrovirus known as XMRV does play a role in ME.
They found the virus in 67% of ME patients compared to under 4% of the general population.
But experts cautioned that the study did not conclusively prove a link between XMRV and ME.
http://news.bbc.co.uk/1/hi/health/8298529.stm