Table 1.

SARS-CoV-2 reverse transcriptase polymerase chain reaction results and corresponding cycle threshold^* value of the patients

	Gene	Ct value of RT-PCR from nasopharyngeal swab
		April 5	April 10	April 15	April 16	April 22	April 23
Daughter	E	27.97	28.16	N/A	28.48	27.00	N/A
	RdRp	29.92	29.78	N/A	30.22	28.83	N/A
	N	30.11	30.15	N/A	30.33	29.93	N/A
Mother	E	N/A	N	N	N	N	N
	RdRp	N/A	N	N	N	N	N
	N	N/A	39.78	38.67	N	N	N

RT-PCR, reverse transcriptase polymerase chain reaction; N, negative; N/A, not available (no test); RdRp: RNA-dependent RNA polymerase.

^*Cycle threshold (Ct) refers to the number of cycles required for the fluorescent signal to cross the threshold in RT-PCR; a lower cycle threshold value indicates a higher viral load.