Unintended Spread of a Biosafety Level 2 Recombinant Retrovirus - This was published just over a year ago in Retrovirology in September 2009 by German authors. http://www.retrovirology.com/content/6/1/86 It details the finding of a synthetic retrovirus (99% similarity) from the 1980's which was not found to be XMRV, but similiar. From the text: "We decided to further analyze the genomic sequence of the MuLV-like contaminant virus. Surprisingly it was neither identical to MuLV nor to the novel xenotropic MuLV related retrovirus (XMRV) but showed 99% identity to a synthetic retrovirus which was engineered in the 1980s. From the Conclusion: "The high degree of nucleotide identity suggests unintended spread of a biosafety level 2 recombinant virus, which could also affect the risk assessment of gene-modified organisms released from contaminated cell cultures." Not sure where to post as highly relevant to XMRV and ME, but not technically the same as its a synthetic creation.