Table 3.

Demographics and nucleic acid-positive prevalence information of human parvovirus B19-positive blood donors among voluntary blood donors in 7 regions.

Blood Centers	B19V DNA prevalence(%)	Donor	Sex	Age	Nationality	Education level	Profession	Donation frequency	Marital status	Viral load(IU/ml)
Mianyang	0.06	1	Female	50	Han	Junior high school	Farmer	First	Married	<103
Mangshi	0.50	1	Male	24	Dai	Primary school	Other	First	Unknown	<103
Mangshi		2	Female	33	Han	Junior high school	Farmer	Repeat	Unknown	2.48 × 103
Mangshi		3	Male	49	Dai	Junior high school	Other	Repeat	Unknown	7.24 × 104
Mangshi		4	Male	19	Han	Technical secondary school	Factory worker	First	Unknown	3.83 × 104
Nanjing	0.21	1	Female	23	Han	University	office worker	First	Single	3.32 × 104
Nanjing		2	Female	20	Han	University	Student	Repeat	Single	1.55 × 104
Nanjing		3	Male	21	Han	University	Student	First	Single	4.85 × 104
Nanjing		4	Female	19	Han	University	Student	Repeat	Single	6.06 × 104