Conclusions: Level of depression may be the most important factor of the cognitive–behavioral model predicting post-treatment fatigue in CFS. Hence, findings suggest that treatment of CFS should include a focus on severity of depression. (Source: Journal of Affective Disorders)MedWorm Message: Register for MedMatcha, MedWorm's medical advertising network, and receive $5 free advertising.

This week, a long-awaited paper about the link between a virus and chronic fatigue syndrome (CFS) finally saw the light of day. The study confirms a controversial 2009 paper that reported CFS patients are often infected with the virus, called XMRV.Author: Martin Enserink (Source: Science: Current Issue)

Authors say patient selection may explain why they were able to confirm a Nevada group's results. Medscape Medical News (Source: Medscape Medical News Headlines)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

New mouse virus variants enter the picture as potential causes of CFS, the controversial condition that leaves people listless and lethargic (Source: New Scientist - Health)

Lo S. Proc Natl Acad Sci. 2010;doi:10.1073/pnas.1006901107. (Source: HemOncToday.com)

Source: Food and Drug Administration Related MedlinePlus Page: Chronic Fatigue Syndrome (Source: MedlinePlus Health News)MedWorm Message: Register for MedMatcha, MedWorm's medical advertising network, and receive $5 free advertising.

Source: Food and Drug Administration Related MedlinePlus Page: Chronic Fatigue Syndrome (Source: MedlinePlus Health News)MedWorm Message: Register for MedMatcha, MedWorm's medical advertising network, and receive $5 free advertising.

Source: Food and Drug Administration Related MedlinePlus Page: Chronic Fatigue Syndrome (Source: MedlinePlus Health News)MedWorm Message: Register for MedMatcha, MedWorm's medical advertising network, and receive $5 free advertising.