Skip to main content
Philosophical Transactions of the Royal Society B: Biological Sciences logoLink to Philosophical Transactions of the Royal Society B: Biological Sciences
. 1997 Jul 29;352(1355):803–838. doi: 10.1098/rstb.1997.0063

The epidemiology of BSE in cattle herds in Great Britain. II. Model construction and analysis of transmission dynamics.

N M Ferguson 1, C A Donnelly 1, M E Woolhouse 1, R M Anderson 1
PMCID: PMC1691968  PMID: 9279898

Abstract

Mathematical model that describe the key processes determining the pattern of the bovine spongiform encephalopathy (BSE) epidemic in British cattle are derived that allow for infection from feed as well as maternal and direct horizontal transmission. Heterogeneous susceptibility classes are also incorporated into the analysis. Maximum likelihood methods are used to estimate parameters and to obtain confidence intervals from available experimental and epidemiological data. A comprehensive sensitivity analysis of all model parameters and distributional assumptions is presented. Additional validation is provided by fitting the model to independent data collected in Northern Ireland. Model estimates and predictions based on BSE case data for Great Britain and Northern Ireland, together with their implications, are reviewed, and future research priorities discussed.

Full Text

The Full Text of this article is available as a PDF (762.5 KB).

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Anderson R. M., Donnelly C. A., Ferguson N. M., Woolhouse M. E., Watt C. J., Udy H. J., MaWhinney S., Dunstan S. P., Southwood T. R., Wilesmith J. W. Transmission dynamics and epidemiology of BSE in British cattle. Nature. 1996 Aug 29;382(6594):779–788. doi: 10.1038/382779a0. [DOI] [PubMed] [Google Scholar]
  2. Brookmeyer R., Gail M. H. Minimum size of the acquired immunodeficiency syndrome (AIDS) epidemic in the United States. Lancet. 1986 Dec 6;2(8519):1320–1322. doi: 10.1016/s0140-6736(86)91444-3. [DOI] [PubMed] [Google Scholar]
  3. Brookmeyer R., Goedert J. J. Censoring in an epidemic with an application to hemophilia-associated AIDS. Biometrics. 1989 Mar;45(1):325–335. [PubMed] [Google Scholar]
  4. Collinge J., Sidle K. C., Meads J., Ironside J., Hill A. F. Molecular analysis of prion strain variation and the aetiology of 'new variant' CJD. Nature. 1996 Oct 24;383(6602):685–690. doi: 10.1038/383685a0. [DOI] [PubMed] [Google Scholar]
  5. Curnow R. N., Hau C. M. The incidence of bovine spongiform encephalopathy in the progeny of affected sires and dams. Vet Rec. 1996 Apr 27;138(17):407–408. doi: 10.1136/vr.138.17.407. [DOI] [PubMed] [Google Scholar]
  6. Denny G. O., Hueston W. D. Epidemiology of bovine spongiform encephalopathy in Northern Ireland 1988 to 1995. Vet Rec. 1997 Mar 22;140(12):302–306. doi: 10.1136/vr.140.12.302. [DOI] [PubMed] [Google Scholar]
  7. Denny G. O., Wilesmith J. W., Clements R. A., Hueston W. D. Bovine spongiform encephalopathy in Northern Ireland: epidemiological observations 1988-1990. Vet Rec. 1992 Feb 8;130(6):113–116. doi: 10.1136/vr.130.6.113. [DOI] [PubMed] [Google Scholar]
  8. Donnelly C. A., Ferguson N. M., Ghani A. C., Woolhouse M. E., Watt C. J., Anderson R. M. The epidemiology of BSE in cattle herds in Great Britain. I. Epidemiological processes, demography of cattle and approaches to control by culling. Philos Trans R Soc Lond B Biol Sci. 1997 Jul 29;352(1355):781–801. doi: 10.1098/rstb.1997.0062. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Hau C. M., Curnow R. N. Separating the environmental and genetic factors that may be causes of bovine spongiform encephalopathy. Philos Trans R Soc Lond B Biol Sci. 1996 Jul 29;351(1342):913–920. doi: 10.1098/rstb.1996.0084. [DOI] [PubMed] [Google Scholar]
  10. Haydon D. T., Woolhouse M. E., Kitching R. P. An analysis of foot-and-mouth-disease epidemics in the UK. IMA J Math Appl Med Biol. 1997 Mar;14(1):1–9. [PubMed] [Google Scholar]
  11. Kimberlin R. H. Bovine spongiform encephalopathy: an appraisal of the current epidemic in the United Kingdom. Intervirology. 1993;35(1-4):208–218. doi: 10.1159/000150311. [DOI] [PubMed] [Google Scholar]
  12. Kirkpatrick S., Gelatt C. D., Jr, Vecchi M. P. Optimization by simulated annealing. Science. 1983 May 13;220(4598):671–680. doi: 10.1126/science.220.4598.671. [DOI] [PubMed] [Google Scholar]
  13. Neibergs H. L., Ryan A. M., Womack J. E., Spooner R. L., Williams J. L. Polymorphism analysis of the prion gene in BSE-affected and unaffected cattle. Anim Genet. 1994 Oct;25(5):313–317. doi: 10.1111/j.1365-2052.1994.tb00364.x. [DOI] [PubMed] [Google Scholar]
  14. Weissmann C. Spongiform encephalopathies. The prion's progress. Nature. 1991 Feb 14;349(6310):569–571. doi: 10.1038/349569a0. [DOI] [PubMed] [Google Scholar]
  15. Wells G. A., Scott A. C., Johnson C. T., Gunning R. F., Hancock R. D., Jeffrey M., Dawson M., Bradley R. A novel progressive spongiform encephalopathy in cattle. Vet Rec. 1987 Oct 31;121(18):419–420. doi: 10.1136/vr.121.18.419. [DOI] [PubMed] [Google Scholar]
  16. Wijeratne W. V., Curnow R. N. A study of the inheritance of susceptibility to bovine spongiform encephalopathy. Vet Rec. 1990 Jan 6;126(1):5–8. [PubMed] [Google Scholar]
  17. Wilesmith J. W., Ryan J. B., Atkinson M. J. Bovine spongiform encephalopathy: epidemiological studies on the origin. Vet Rec. 1991 Mar 2;128(9):199–203. doi: 10.1136/vr.128.9.199. [DOI] [PubMed] [Google Scholar]
  18. Wilesmith J. W., Ryan J. B., Hueston W. D. Bovine spongiform encephalopathy: case-control studies of calf feeding practices and meat and bonemeal inclusion in proprietary concentrates. Res Vet Sci. 1992 May;52(3):325–331. doi: 10.1016/0034-5288(92)90032-w. [DOI] [PubMed] [Google Scholar]

Articles from Philosophical Transactions of the Royal Society B: Biological Sciences are provided here courtesy of The Royal Society

RESOURCES