TABLE 2.

Detection rates of N-gene-specific RT-PCR assay for SARS-CoV

No. of days after onset of illness	No. of samples	No. of positive samples	Detection rate (%)
1-2	15	2	13.3
3-4	17	4	23.5
5-6	15	4	26.7
7-8	13	5	38.5
9-10	9	4	44.4
Negative control	19	0