In his presentation dr Bell mentions that male to female ration of CFS is about the same in affected children. In adults the prevalence is much higher in females (anyone know the ratio?) IF it turns out that xmrv is involved in etiology of both autism and CFS this is what I find quite striking. For the sake of argument I will call both conditions XAND in this chart. Also for the sake of argument I will say that autism develops 0-5 years of age. Also the age group of 5-15 is rough… but it would be really interesting to see if gender ration is still the same in children with CFS as they approach adolescence and adulthood. age XAND develops: 0-5 male to female ratio 4:1 5 – 15 male to female ratio 1:1 15 onwards male to female ratio 1:4(?) In any case IF it is shown that both autism and CFS are in fact XAND, quite intriguing how gender prevalence changes depending on when the disease develops.