Table 2.

Comparison of RVFV in whole blood and plasma samples.

Patient	Days (p.o.)	Whole Blood (Ct)	Plasma (Ct)
A	20	29.5	37.8
B	16	35.0	>45.0
C	15	35.1	n.d.
D	4	16.8	16.5
E	7	23.4	23.8
F	11	32.1	36.1
G	6	30.0	40.0
H	10	36.5	n.d.

Apparent viral genome loads in whole blood and plasma are equivalent for high titer patients (Ct values <25) but become increasingly disparate as viral genome titers decrease (Ct values >25). Key: Ct = cycle threshold; n.d. = not detectable (no amplification present - negative); >45 = amplification was present but did not reach threshold within 45 cycles, considered negative; p.o. = post onset of clinical symptoms