Minutes of SACTTI Working Group on vCJD Prion Reduction Filter Efficacy Sub Group Meeting, 20 September 2005 at Postgraduate Education Centre, Royal Infirmary of Edinburgh, re Prion Reduction Working Group report; Review of risk analysis, Pall data, PRDT data, Independent Evaluation Study, and AQCB. Attendees Dr. Mark Head; Dr. Frank van Engelenberg; Dr. Mark Sutton; Dr. Lorna Williamson; Dr. Robert Somerville; Dr. Mark Glatzel; Dr. Neil Raven; Dr. Paul Harrison; Dr. Stephen Dobra; Dr. Marc Turner.