Table 3. Identification of OPA infection according to sheep age, gender, and herd size.

Categories		Infected	Uninfected	Total	X 2
Age	≥ 2 years	2 (8.69%)	21	23
	2–4 years	14 (11.2%)	111	125
	≤ 5 years	5 (10.63%)	42	47
	Total	21 (10.76%)	174	195	0.1337
Sex	Male	2 (10%)	18	20
	Female	19 (10.85%)	156	175
	Total	21 (10.76%)	174	195	0.0137
Herd size	≥50	2 (8%)	23	25
	50–100	5 (11.11%)	40	45
	100–200	6 (10%)	54	60
	<200	8 (12.30%)	57	65
	Total	21 (10.76%)	174	195	0.397