Table 4.

The predicted genotype and test-positive frequency distributions (number) for the complete British ovine healthy-slaughter population surveyed for scrapie during the period 2002–2004 including overall predicted prevalence estimates and 95% confidence intervals (95% CI), by screening test [Bio-Rad ELISA and Prionics Check Western blot (Prionics CW)]. Estimated odds ratios by PrP genotype for clinical (classical) scrapie from a published reference is indicated, as are the genotypes in which atypical cases have been found in Great Britain

Y, yes; N, no.

^*Adapted from ref. [7].

^†Pre-clinical atypical scrapie cases were detected in these genotypes in the ovine healthy-slaughter and fallen-stock scrapie surveillance populations in Great Britain during the period 2002–2004.

^‡Actual number.