Table 3. B19V DNA and antibodies in plasma pools.

Blood products manufactures	Sample type	Samples detection (n)	B19V DNA-positive samples
			B19 DNA positive (n)	Prevalence of B19 DNA (%)	95% confidence interval [CI]	B19 viral load ≥1 ×10 4 IU/mL (n)	Prevalence of B19 viral load ≥1 ×10 4 IU/mL (%)	95% confidence interval [CI]	IgG positive (%)	IgM positive (%)
A	plasma pools	100	27	27	18.15 ∼ 5.85	4	4	0 ∼ 6.40	100	0
B	plasma pools	100	90	90	84.02 ∼ 95.98	21	21	12.88 ∼ 29.12	100	0
C	plasma pools	100	81	81	73.18 ∼ 88.82	17	17	13.74 ∼ 30.26	100	0
D	plasma pools	100	61	61	51.27 ∼ 70.73	29	29	19.95 ∼ 38.05	100	0
Total	plasma pools	400	259	64.8	60.05 ∼ 69.45	71	17.8	14.91 ∼ 22.59	100	0