Peter G. Smith, Simon N. Cousens
Smith and Cousens outline the epidemiological evidence that a new form of Creutzfeldt-Jakob disease is due to the same infectious agent as the one causing the outbreak of bovine spongiform encephalopathy in British cattle.
The authors are in the Department of Epidemiology and Population Sciences, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK. E-mail: psmith{at}lshtm.ac.uk