. 2021 Jul 7;50(1):131–137. doi: 10.1007/s15010-021-01650-5

Table 2.

Relationship of duration between COVID-19 diagnosis and delivery with the detection of SARS-CoV-2 RNA and IgG-anti-SARS-CoV-2 antibodies in the cord blood samples

Mothers		Infants
Duration between viral RNA detection and delivery (No. of days)^a	No. of SARS-CoV-2 RNA positives	SARS-CoV-2 RNA No. positive/No. tested (%)		IgG-anti-SARS-CoV-2 antibodies No. positive/no. tested (%)
	No. of SARS-CoV-2 RNA positives	Nasopharyngeal swab	Cord blood	IgG-anti-SARS-CoV-2 antibodies No. positive/no. tested (%)
0–3	36	0/36	1/34 (2.9)	8/34 (23.5)
4–7	11	0/10	0/8	1/8
8–14	06	1/6	0/6	0/6
15–21	04	0/4	0/3	2/3
Total	57	1/56 (1.8)	1/51 (1.9)	11/51 (21.6)
RNA negative at delivery (controls)	0	Not tested	0/39	20/39 (51.3)

^aIn addition, 2 neonates born to mothers with COVID-19 60 days before delivery were positive in IgG ELISA and PRNT