Table 1.

Numbers of nasopharyngeal samples tested, by treatment group, health status, and sampling timepoint (Total n = 561).

	Treatment			Health status
Subset	CON	INJ	INT	Healthy	BRD cases	Mortalities
All cattle and timepoints	176	186	199
Healthy cattle	70	77	84
All D 0 samples	76	82	85	116	85	42
All D 28 samples	62	65	77	114	82	8
Healthy D 0 samples	35	41	41
Healthy D 28 samples	35	36	43