Table 1.

Results of BoHV-2 serology in relation to the region of origin of animals (a) and farms (b)

a Individual animal level
	BoHV-2 seropositive animals (n = 375)	BoHV-2 seronegative animals (n = 6426)	ORa(CI 95%)	p-value
North Bavaria	8	1908	1.00	–
Lower Bavaria	19	1051	4.31 (1.88–9.88)	< 0.001
Upper Bavaria	56	1144	11.67 (5.55–24.58)	< 0.001
Swabia	292	2323	29.98 (14.81–60.67)	< 0.001
b Farm level
	BoHV-2 seropositive farmsb(n = 78)	BoHV-2 seronegative farmsc(n = 328)	ORa(CI 95%)	p-value
North Bavaria	5	100	1.25 (0.29–5.40)	0.764462
Lower Bavaria	3	75	1.00	–
Upper Bavaria	17	65	6.54 (1.83–23.32)	< 0.05
Swabia	53	88	15.06 (4.52–50.15)	< 0.001

^aOdds Ratios

^bfarms are classified as BoHV-2 seropositive when at least one BoHV-2 seropositive animal is kept

^cfarms are classified as BoHV-2 seronegative when none of the tested animals had antibodies against BoHV-2