More interesting research, this time from the US FDA, and published on the Health and Human Services website. Another reason for a Wessely smoke screen? If this has already been posted, or if it's in the wrong place, can a mod please move or delete? Investigating Viruses in Cells Used to Make Vaccines; and Evaluating the Potential Threat Posed by Transmission of Viruses to Humans http://www.fda.gov/biologicsbloodvaccines/scienceresearch/biologicsresearchareas/ucm127327.htm "General Overview The emergence of pathogenic virus infections like influenza and HIV have created an urgent need for new vaccines. Virus-based vaccines are made in living cells (cell substrates). Some manufacturers are investigating the use of new cell lines to make vaccines. The continual growth of cell lines ensures that there is a consistent supply of the same cells that can yield high quantities of the vaccine." "Similarly, we are investigating the transmission and infection processes of a new human retrovirus, xenotropic murine leukemia virus-related virus (XMRV). We are pursuing this work both in vitro ("test tube" studies) as well as in the monkey model, in order to address potential safety concerns in vaccine cell substrates and in blood products." "Xenotropic murine leukemia virus-related virus (XMRV) is a recently discovered human retrovirus that has been found in both chronic fatigue syndrome and prostate cancer patients. Although these findings need further confirmation, there is a potential safety concern regarding XMRV in cell substrates used in vaccines and in transmission by blood transfusion and blood products. We are developing sensitive detection assays for XMRV to evaluate cell substrates and investigate virus transmission by blood transfusion in a monkey model."