Table 3.

Adjusted effects on test-day SCC (TDSCC; ×1,000 cells/mL) according to the herd-status with respect to bovine respiratory syncytial virus (BRSV) and bovine coronavirus (BCV) infection

Herd status1	BRSV		BCV
	TDSCC	95% CI	TDSCC	95% CI
Type I status (model I)2
RI	−3	−18; 4	−1	−13; 10
PSI	0	−11; 17	4	−1; 28
FREE	Reference	—	Reference	—
Type II status (model II)2
O-Y	12	3; 34	−3	−19; 3
O-N	Reference	—	Reference	—
Type III status (model III)2
RI-Y	8	3; 52	1	−8; 18
RI-N	−10	−34; −15	−6	−31; 1
PSI-Y	6	−13; 65	1	−12; 23
PSI-N	0	−13; 16	3	−4; 23
FREE	Reference	—	Reference	—

¹RI = presumably recently infected; PSI = presumably past steadily infected; FREE = presumably free of infection; O-Y = with an outbreak; O-N = without any outbreak; RI-Y = presumably recently infected with an outbreak; RI-N = presumably recently infected without any outbreak; PSI-Y = presumably past steadily infected with an outbreak; PSI-N = presumably past steadily infected without any outbreak.

²See main text for definition.