There is so much work that still needs to be done in the CFS community! It seems every time I turn a corner thinking I have an answer, I end up with more questions. I, unlike a lot of people, hoped that I did not have XMRV. Unfortuantely, I am positive by culture. What is really interesting is my husband, and children are negative. I would have assumed by the nature of my relationship with my husband, and the fact that I breast-fed my children that they would also be positive. I've never had a blood transfusion, so I have very few ways I could have aquired this. I feel like there are a couple of scenarios that can explain it: 1.The testing still needs to be fine tuned (false negatives?) 2. I received the virus during a Tetanus shot prior to me becoming ill (contaminated vaccines???). 3. XMRV, despite current theories on its transmission, is a piggy back virus. Currently, I still lean towards number three. Thoughts or comments?