Table 1. High prevalence of PBoV1-H18 and PBoV2-A6 detected by nested–PCR assay in fecal samples from different aged pigs in five provinces of China.

Location(province)	Number of farms	Age(day)	Positive/tested samples for PBoV1-H18	Positive/tested samples for HBoV2-A6	Co-infection/tested samples
Shanghai	4	<45	22/40	24/40
		45–90	27/40	23/40
			49/80 (61.3%)	47/80 (58.8%)	31/80 (38.8%)
Jiangsu	3	<45	10/30	24/30
		45–90	18/30	21/30
			35/60 (58.3%)	41/60 (68.3%)	22/60 (36.7%)
Anhui	6	<45	41/60	42/60
		45–90	36/60	39/60
			77/120 (64.2%)	81/120 (70.1%)	46/120 (38.3%)
Shandong	1	<45	5/10	5/10
			4/10	6/10
			9/20 (45%)	11/20 (55%)	6/20 (30%)
Guizhou	3	<45	26/30	21/30
		45–90	19/30	18/30
			45/60 (75%)	39/60 (65%)	28/60 (46.7%)
Total	17		215/340 (63.2%)	219/340 (64.4%)	133/340 (39.1%)