1. Allan GM, McNeilly F, McNair I, Curran MD, Walker I, Ellis J, Konoby C, Kennedy S, and Meehan B (2000) Absenceof evidence for porcine circovirustype 2 in cattle and humans, and lack of seroconversion or lesions in experimentally infected sheep. ArchVirol. 145:853–857
2. Anderson RM, and May RM (1992) Infectious diseases of humans: dynamics and control, 2nd ed.OxfordUniversityPress, Oxford
3. Barrett T, Visser IK, Mamaev L, Goatley L, van Bressem MF, and Osterhaus AD (1993) Dolphin and porpoise morbilliviruses are genetically distinct from phocine distempervirus. Virology 193:1010–1012
4. Benveniste RE, and Todaro GJ (1974) Evolutionof Ctypeviral genes: inheritanceof exogenously acquiredviral genes. Nature 252:456–459
5. Berry N, Davis C, Jenkins A, Wood D, Minor P, Schild G, Bottiger M, Holmes H, and Almond N (2001) Vaccine safety. Analysisoforal polio vaccine CHATstocks. Nature 410:1046–7