Table 1.

Pathogen detection in the nasal samples.

(a) Incidence of viral pathogens in 311 nasal samples
Respiratorysymptom	Age	Total	Pathogens detected
			BToV	BCV	IBRV	BVDV	BRSV
+	1∼12 month	174	7 (4.0%)*	19 (10.9%)	0 (0.0%)	1 (0.6%)	4 (2.3%)
	over 12 month	31	0 (0.0%)	12 (38.7%)	1 (3.2%)	1 (3.2%)	0 (0.0%)
	Total	205	7 (3.4%)	31 (15.1%)	1 (0.5%)	2 (1.0%)	4 (2.0%)
−	1∼12 month	90	0 (0.0%)	3 (3.3%)	0 (0.0%)	2 (2.2%)	0 (0.0%)
	over 12 month	16	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
	Total	106	0 (0.0%)	3 (2.8%)	0 (0.0%)	2 (1.9%)	0 (0.0%)
Total		311	7 (2.3%)	34 (10.9%)	1 (0.3%)	4 (1.3%)	4 (1.3%)

(b) The general condition of the BToV-positive cattle upon the collection of the nasal samples
Sample name	Sampling month	Prefecture	Age	breed	Other detected pathogens	BToV nested RT-PCR result
						Nucleocapsid	Spike	Hemagglutinin-esterase
rBToV-1	2006. Dec	Gifu	8 month	beef	Bovine coronavirus	+	+	−
rBToV-2	2007. Apr	Gifu	7 month	beef		+	+	+
rBToV-3	2007. Jun	Akita	2 month	beef		+	+	−
rBToV-4	2008. Jan	Aichi	1 month	dairy		+	+	+
rBToV-5	2008. Jan	Aichi	2 month	dairy	Mycoplasma bovis	+	+	+
rBToV-6	2008. Mar	Nara	5 month	beef		+	+	+
rBToV-7	2008. Jun	Chiba	6 month	beef		+	−	−

^*No. (%) of positive cattle.