TABLE 1.

Details of the Merino flocks sampled during this study

Farm	State	Operator	Diagnostic approach	Season at time of inspection	No. of mobs inspected	No. of sheep inspected	No. or percentage of sheep with score 4 lesions	Clinical diagnosis	No. of sheep with lesions sampled	No. of swabs tested directly (n = 758)	No. of isolates collected (n = 469)
1	SA	AHOa	2	Winter	1	NAb	≥10%	Virulent	11	12	12
2	NSW	Authors	3	Winter	NA	54	23	Virulent	14	4	12
3	TAS	Authors	3	Winter	NA	51	11	Virulent	24	11	11
4	TAS	Authors	3	Winter	NA	52	40	Virulent	50	10	14
5	TAS	AHO	3	Winter	NA	42	10	Virulent	20	23	23
6	TAS	AHO	2	Winter	1	NA	≥10%	Virulent	20	23	23
7	TAS	AHO	3	Winter	NA	33	26	Virulent	20	20	20
8	TAS	AHO	3	Winter	NA	28	18	Virulent	20	19	19
9	TAS	AHO	3	Winter	NA	13	7	Virulent	13	13	13
10	TAS	AHO	3	Spring	NA	26	11	Virulent	20	15	15
11	TAS	AHO	3	Spring	NA	20	5	Virulent	20	8	8
12	SA	AHO	2	Spring	1	NA	≥10%	Virulent	10	10	10
13	SA	AHO	2	Spring	1	NA	≥10%	Virulent	6	9	9
14	SA	AHO	2	Spring	1	NA	≥10%	Virulent	7	8	7
15	SA	AHO	2	Spring	1	NA	≥10%	Virulent	10	13	13
16	SA	AHO	3	Spring	NA	16	3	Virulent	16	16	16
17	TAS	Authors	3	Spring	NA	25	14	Virulent	25	15	15
18	TAS	Authors	3	Spring	NA	50	19	Virulent	50	29	29
19	NSW	Authors	3	Summer	NA	51	15	Virulent	50	15	15
20	NSW	AHO	3	Summer	NA	50	4	Benign	14	14	14
21	TAS	AHO	2	Summer	1	NA	≥10%	Virulent	11	11	11
22	TAS	AHO	2	Summer	1	NA	≥10%	Virulent	17	17	17
23	SA	AHO	2	Summer	1	NA	≥10%	Virulent	4	4	4
24	NSW	Authors	3	Autumn	NA	20	0	Benign	20	20	21
25	NSW	Authors	3	Winter	NA	NA	≥10%	Virulent	10	14	14
26	TAS	AHO	2	Winter	1	NA	≥10%	Virulent	12	5	5
27	SA	Authors	1	Spring	1	100	4	Benign	40	40	20
28	SA	Authors	1	Spring	1	100	0	Benign	40	40	11
29	SA	Authors	1	Spring	1	100	2	Benign	40	40	12
30	SA	Authors	1	Spring	1	100	0	Benign	40	40	6
31	SA	Authors	1	Spring	1	170	0	Benign	40	40	3
32	SA	Authors	1	Spring	1	100	0	Benign	40	40	7
33	SA	AHO	2	Spring	1	1716	42	Benign	50	0	15
34	TAS	Authors	1	Winter	2	100	0	Benign	30	30	6
35	NSW	Authors	1	Winter	2	120	0	Benign	21	21	10
36	NSW	Authors	1	Winter	1	100	0	Benign	28	20	6
37	NSW	Authors	1	Winter	1	100	0	Benign	22	20	1
38	NSW	Authors	1	Winter	1	100	0	Benign	20	20	2
39	NSW	Authors	1	Winter	1	100	0	Benign	25	23	0
40	WA	AHO	2	Winter	1	NA	0	Benign	30	27	0

^aAHO, animal health officer.

^bNA, not available.