NR AYGD
AU Prattley,D.J.; Cannon,R.M.; Wilesmith,J.W.; Morris,R.S.; Stevenson,M.A.
TI A model (BSurvE) for estimating the prevalence of bovine spongiform encephalopathy in a national herd
QU Preventive Veterinary Medicine 2007 Aug 16; 80(4): 330-43
PT journal article; research support, non-u.s. gov't
AB We developed the BSurvE spreadsheet model to estimate the true prevalence of bovine spongiform encephalopathy (BSE) in a national cattle population, and evaluate national BSE surveillance programs. BSurvE uses BSE surveillance data and demographic information about the national cattle population. The proportion of each cohort infected with BSE is found by equating the observed number of infected animals with the number expected, following a series of probability calculations and assuming a binomial distribution for the number of infected animals detected in each surveillance stream. BSurvE has been used in a series of international workshops, where analysis of national datasets demonstrated patterns of cohort infection that were consistent with infection-control activities within the country. The results also reflected the timing of known events that were high-risk for introduction of the infectious agent.
MH Animals; Cattle; Encephalopathy, Bovine Spongiform/*epidemiology; European Union; *Models, Biological; Prevalence; Software
AD EpiCentre, Institute of Veterinary, Animal, and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand. d.j.prattley@massey.ac.nz
SP englisch
PO Niederlande