 A series of record-linkage studies in Scotland on the late sequelae of Hepatitis C virus infection (with Hutchinson and Goldberg) and on the high risk of drugs-related death soon after prison-release (or after hospital-discharge for drug-treatment clients) followed.With Cooper, she estimated UK's dietary exposure to BSE by birth-cohort and they deduced lower susceptibility to vCJD-progression from dietary BSE exposure at older ages.Bird also designed the European Union's robust surveillance at abattoirs for late-stage transmissible spongiform encephalopathies in sheep.