It has been published yesterday in The Wall Street Journal and EL Pais, two main newspapers in USA and Spain. A new virus is apparently linked to prostate cancer and CFS.
This retrovirus is name is XMRV and if this conclusions are taken as a standard it will be the responsible for a change in the name of CFS to XAND (X associated Neuro-Immune Disease).
Now the responsible team of this study increase the % from 67% to 95% of the patients of CFS that do have this retrovirus in their blood. You can read the study in the magazine Science: http://www.sciencemag.org/cgi/rapidpdf/1179052v1.pdf?ijkey=m3wzKT4yJqEyk&keytype=ref&siteid=sci
It is quite shocking that almost 4% of healthy population also has this virus, because that would mean that if this is contagious it would be a similar thing than HIV and AIDS, some people get sick, some others not, but the ones that are sick, have the virus. With CFS, now XAND, people that has XMRV might get sick or not, but people that do get sick with XAND do have XMRV 95% of the occasions.
Benefits of this disease to be contagious: it will be taken seriously and public funds will be invested in research. Negative side is the stigmatization for fear, lack of information, etc...