Table 2.

Third year summary of antemortem and post-mortem testing by PRNP genotype. Immunohistochemistry (IHC) and real time quaking-induced conversion (RT-QuIC) were used to evaluate rectal biopsies from ranched elk for evidence of chronic wasting disease (CWD). Post-Mortem samples were collected either following euthanasia or when available from animals harvested in the field, to confirm their CWD status. Animals from the second year of sampling which were not harvested, and did not return for the third year of the study, were presumed to have died in the field, with no sample available (NSA) for post-mortem testing. Final post-mortem test results from the third year of the study were typically not available.

		Number Tested			Antemortem test results					Post-Mortem IHC results
Study Period	132 PRNP	Bulls	Cows	Untested Calves	IHC+Only	IHC(+), RT-QuIC(+)	RT-QuIC(+)Only	IHC(-), RT-QuIC Suspect	IHC(-), RT-QuIC(-)	CWD(+)	CWD(-)	NSA	Returned
Year 2	MM	38	74	45	2	36	5	3	66	35	21	40	61
	ML	63	115	30	0	14	11	8	145	23	75	45	68
	LL	13	12	10	0	1	0	0	24	5	7	8	15
Year 3	MM	30	31	1	1	12	5	1	42	17	16	29	0
	ML	29	36	3	1	7	1	1	55	12	21	35	0
	LL	10	5	5	1	1	0	0	13	1	2	17	0