Table VI.

BCV virus isolation and serology for commingled, mixed source calves after arrival at feedlot and treatment for BRD

Study	Calf number	Day collected	Virus isolation		Serology
			Nasal swab	BAL	Acute	Convalescent
OSU-1	524	1	Neg	Neg	256	256
	575	2	Pos	Pos	8	128
	603	2	Pos	Pos	< 4	256
	611	2	Neg	Neg	1024	256
	486	3	Neg	Neg	128	128
	521	3	Pos	Pos	< 4	256
	529	3	Neg	Neg	128	NS
	554	3	Pos	Pos	< 4	256
	591	3	Pos	Pos	< 4	256
	482	4	Neg	Neg	64	512
	488	4	Neg	NS	128	128
	600	4	Pos	Pos	< 4	64
OSU-2	688	1	Neg	Neg	32	256
	740	1	Neg	Neg	16	512
	769	1	Pos	Pos	4	512
	787	1	Pos	Neg	16	512
	797	1	Pos	Pos	16	256
	676	2	Neg	Neg	64	1024
	681	2	Neg	Neg	64	512
	801	2	Neg	Neg	64	128
	802	2	Pos	Pos	32	256
	815	2	Neg	Neg	32	256
	718	4	Neg	Neg	> 2048	512
	762	4	Neg	Neg	64	512
	775	4	Neg	Neg	> 2048	1024
	829	4	Neg	Neg	> 2048	1024

BCV — bovine coronavirus; BRD — bovine respiratory disease; NS — no sample.