Email chain between Pat Troop to Charles Lister Andre Harem Peter Bennett Jeremy Townshend Alex Berland Mike McGovern Keith Paley and others suggests distinguishing the action to reduce vCJD risk and the risk from UK FFP enquires how to meet an earlier recommendation of MSBT on reducing the viral risk of FFP what are the costs per symptom free year for an outbreak of 1000 and one of 100000