VIRUSES have nothing to do with chronic fatigue syndrome (CFS), despite earlier evidence of a link, a study has shown.
Scientists dismissed previous claims that two viruses, known as XMRV and pMLV, may underlie CFS, also known as myalgic encephalomyelitis (ME).
"These results refute any correlation between these agents and (the) disease," said Dr Ian Lipkin, a member of the research team from Columbia University in New York City.
CFS can strike out of the blue and causes severe tiredness as well as muscle weakness, aches and pains, memory loss and poor sleep.
It was once dismissed as a purely psychological problem, but experts now agree that it is a serious physical illness.