Table 2. Detection results of clinical specimen by the rRT-PCR based on molecular targets of ORF1ab, N and E gene.

Target gene		Alveolar lavage n(%)	Sputum n(%)	Throat swab n(%)	Stool n(%)
	Total	n=15	n=28	n=53	n=39
ORF1ab	Positive rate (%)	14 (93.33%)	12 (42.86%)	25 (47.17%)	16 (41.03%)
	Mean Ct value	31.11	28.44	32.53	29.93
	Range	26.41−36.25	18.44−36.38	24.22−38.58	22.27−37.51
N	Positive rate (%)	14 (93.33%)	12 (42.86%)	25 (47.17%)	16 (41.03%)
	Mean Ct value	31.45	28.91	33.61	31.14
	Range	26.58−36.98	18.04−37.76	25.73−38.31	23.46−38.11
E	Positive rate (%)	14 (93.33%)	12 (42.86%)	25 (47.17%)	16 (41.03%)
	Mean Ct value	31.33	28.64	33.27	30.46
	Range	26.45−36.55	18.34−36.42	25.03−38.54	22.46−38.30