Table 1.

Results of plasma IgM/IgG and nucleic acid testing, semen nucleic acid testing (cycle threshold) and Zika virus RNA loads in semen

Participant	Day since index donation	Origin of sample	Plasma IgM/IgG	Plasma NAT	Semen NAT (Ct)	ZIKV RNA load in semen (copies/mL)
1	47	PR	P/P	N	N	—
2	27	PR	P/P	N	P (37.15)	8.03 × 103
3	6	PR	P/P	N	N	—
	26	PR	P/P	N	N	—
	181	PR	Eq/Eq	N	N	—
4	7	PR	P/P	N	N	—
	15	PR	P/P	N	N	—
	104	PR	Eq/P	N	N	—
	181	PR	Eq/P	N	N	—
5	10	PR	P/P	N	N	—
6	7	PR	P/P	N	N	—
	21	PR	P/P	N	N	—
	46	PR	Eq/P	N	N	—
	90	PR	N/P	N	N	—
7	7	PR	P/P	Eq	P (27.77)	1.55 × 106
	18	PR	P/P	N	P (30.96)	2.59 × 105
	54	PR	P/P	N	P (31.37)	2.05 × 105
	108	PR	P/P	N	N	—
8	10	PR	P/P	N	N	—
9	8	PR	P/P	N	N	—
	21	PR	P/P	N	N	—
	42	PR	P/P	N	N	—
10	25	US	P/P	N	P (26.88)	2.55 × 106
	38	US	P/P	N	P (29.97)	4.49 × 105
11	9	PR	P/P	P	P (33.27)	7.06 × 104
12	24	US	NA/NA	N	N	—
13	21	PR	P/P	N	N	—
	43	PR	NA/NA	N	N	—
14	22	US	P/Eq	N	P (34.44)	3.67 × 104

Abbreviations: Ct, cycle threshold; PR, Puerto Rico; US, USA (Florida); P, positive; Eq, equivocal; N, negative; NA, not available; ZIKV, Zika virus.