Table 3 Maternal and foetal SARS-CoV-2 genome and anti-SARS-CoV-2 antibody detection.

From: Analysis of SARS-CoV-2 vertical transmission during pregnancy

Subject no.

Clinical outcome

ΔT1−T0 (days)

Maternal plasma

Vaginal swab

Placenta

Amniotic fluid

Umbilical cord plasma

Umbilical cord

Nasopharyngeal newborn swab

Milk

Classification system by Shah et al.36

   

Viral RNA

IgM

IgG

Viral RNA

Viral RNA

Viral RNA

Viral RNA

IgM

IgG

Viral RNA

Viral RNA

Viral RNA

IgM

IgG

 

1

Severe

2

N/A

+

+

Not infected

2

Mild

1

N/A

N/A

N/A

N/A

Not infected

3

Mild

1

N/A

Not infected

4

Severe

2

+

+

N/A

Not infected

5

Mild

7

N/A

N/A

N/A

N/A

Not infected

6

Mild

1

+

+

N/A

N/A

Not infected

7

Mild

12

+

+

Not infected

8

Severe

6

+

+

N/A

N/A

N/A

N/A

Not infected

9

Mild

1

N/A

N/A

N/A

N/A

Not infected

10

Mild

1

N/A

Not infected

11

Mild

5

N/A

Not infected

12

Mild

4

+

N/A

N/A

N/A

N/A

N/A

Not infected

13

Mild

3

+

N/A

+

Not infected

14

Mild

3

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

15

Mild

4

N/A

N/A

N/A

N/A

N/A

Not infected

16

Mild

2

N/A

N/A

N/A

N/A

N/A

Not infected

17

Severe

6

+

+

+

+

+

N/A

+

+

N/A

+

N/A

N/A

N/A

Confirmed

18

Mild

2

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

19

Mild

9

+

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

20

Mild

3

+

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

21

Mild

13

+

N/A

N/A

N/A

N/A

N/A

Not infected

22

Mild

10

N/A

N/A

N/A

N/A

N/A

Not infected

23

Mild

9

N/A

N/A

N/A

N/A

Not infected

24

Mild

12

N/A

N/A

N/A

N/A

N/A

Not infected

25

Mild

17

+

+

+

N/A

+

+

N/A

+

N/A

N/A

N/A

Possible

26

Mild

13

+

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

27

Mild

1

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

28

Mild

3

+

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

29

Mild

2

+

N/A

N/A

Not infected

30

Mild

1

+

N/A

+

N/A

N/A

N/A

N/A

Not infected

31

Recovered

N/A

+

N/A

N/A

+

N/A

N/A

N/A

N/A

Not infected

  1. ΔT1−T0 (days) refers to the time spanning between the first COVID19 diagnosis (T0) and delivery (T1).
  2. N/A not available.