Using patient-collected clinical samples and sera to detect and quantify the severe acute respiratory syndrome coronavirus (SARS-CoV)

Table 1 Detection and quantitation of SARS-CoV RNA by RT-PCR in sera.

Days after onset	Samples	Positive (number, %)	Viral load (log₁₀ copies/ml ± SD)
1–4	76	38 (50)	2.74 ± 0.88
5–9	154	87 (56.5)	2.78 ± 1.04
10–14	129	39 (30.2)	2.58 ± 1.02
15–19	88	24 (27.3)	2.27 ± 0.85
20–24	24	4 (16.7)	2.11 ± 1.04
≥25	143	0	-
Total	614	192 (31.3)	2.65 ± 0.99

ISSN: 1743-422X