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Table 1 Incubation periods

From: Accumulation and dissemination of prion protein in experimental sheep scrapie in the natural host

Group Challenge Age at challenge (days) Attack rate Mean incubation period (days)
Range, (SD)
1 1 g RBP1 oral 14 25/25 192
185–204, (6.9)
2 5 g RBP1 oral 14 28/28 185
178–198, (7.4)
3 1 g RBP1 oral (after 3 g scrapie negative sheep brain) 245 8/8 345
198–639, (186)
4 Exposure to groups 1 and 2 42 days onwards 4/4 649*
592–716, (61)
5 3 g Scrapie negative sheep brain 14 days 8/8 1085**
880–1231 (156)
  1. * Days since mixing with groups 1 and 2
  2. ** Age at death, as exact timing of infection unknown