Table 1. Univariable analysis of potential risk factors for having a persistently infected presumed bovine viral diarrhoea virus (PI) calf in the herd in the Adamawa Region of Cameroon.

Question	Variable	Levels	BVD T+	BVD T-	OR	p-value
Do you see antelope grazing near your herd?	antgrz	no	19	106	1.00	0.08
		yes	6	11	3.01
Do you see buffalo near your herd while grazing or on transhumance?	buffevr	no	12	82	1.00	0.04
		yes	13	35	2.52
Do you see antelope near your herd while grazing or on transhumance?	antevr	no	11	86	1.00	0.01
		yes	14	31	3.49
Do you keep any goats?	owngt	no	16	97	1.00	0.05
		yes	9	20	2.71
Approx. how many other herds does your herd mix with at grazing?	mxgrazct	0–10	11	78	1.00	0.02
		10	14	35	2.81