TABLE 3.

Frequency of observations for each lesion characteristic in each flock at the time of collection of swabs^a

Factor	Flock no.
	1	2	3	4	5	6	7	8	9	10	11	12
Foot score
1	11	1	2	0	2	0	2	1	1	0	1	2
2	2	2	2	0	2	1	2	4	10	0	9	14
3	0	7	11	2	11	9	2	8	4	7	4	6
4	11	40	5	18	5	10	7	7	5	5	11	3
Total	24	50	20	20	20	20	13	20	20	12	25	25
Lesion type
Active	18	46	18	20	20	20	13	19	20	12	25	22
Inactive	6	4	2	0	0	0	0	1	0	0	0	3
Total	24	50	20	20	20	20	13	20	20	12	25	25
Contamination
Low	5	21	14	19	14	15	3	6	0	10	4	8
Moderate	19	17	6	1	5	5	7	11	11	2	14	17
High	0	12	0	0	1	1	3	3	9	0	7	0
Total	24	50	20	20	20	20	13	20	20	12	25	25

^aFoot scores were assigned using a scoring system (35). “Contamination” refers to the presence of soil and feces on the foot lesion.