Table 3.

Reports describing PCV-3 frequency of detection on different countries and sample types.

References	Country	Sample type	PCV-3 positive (n)	Tested samples (n)	Frequency of detection (%)
Collins et al. (85)	Ireland	Tissue and feces	52	313	16.61
Fu et al. (73)	China	Tissue and stillborn	76	285	26.67
Kwon et al. (82)	South Korea	Oral fluid	159	360	44.17
Ku et al. (70)	China	Tissue, stillborn, semen and serum	77	222	34.68
Palinski et al. (21)	USA	Serum	47	150	31.33
Stadejek et al. (77)	Poland	Serum	55	215	25.58
Xu et al. (86)	China	Tissue and serum	53	170	31.18
Zhai et al. (87)	China	Tissue and serum	84	506	16.60
Zheng et al. (71)	China	Tissue	132	222	59.46
Wen et al. (88)	China	Tissue and serum	50	155	32.26
Klaumann et al. (81)	Spain	Serum	75	654	11.47
Franzo et al. (89)	Italy	Sponge sample	2	4	50.00
Franzo et al. (76)	Denmark	Tissue and serum	44	78	56.41
Franzo et al. (76)	Italy	Tissue and serum	36	91	39.56
Franzo et al. (76)	Spain	Serum (pools)	14	94	14.89
Hayashi et al. (90)	Japan	Tissue	7	73	9.59
Kedkovid et al. (84)	Thailand	Colostrum	17	38	44.74
Kedkovid et al. (91)	Thailand	Tissues and serum	33	103	32.04
Sun et al. (78)	China	Tissue	13	200	6.50
Zou et al. (69)	China	Serum	62	190	32.63
Zhao et al. (92)	China	Tissue	40	272	14.71
Ye et al. (93)	Sweden	Tissue	10	49	20.41
Kim et al. (94)	Korea	Serum	37	286	17.9
Kim et al. (94)	Korea	Tissue	20	296	6.8