Table 1 Demographic parameters of all participants, neonates and mothers of this survey

Parameters

  Age of all participants/days or years at the time of sampling

41.8 ± 14.5 (1 day-91 years)

42.9 ± 14.9 (1 day-93 years)

42.5 ± 14.7 (1 day-93 years)

0.404 Student T Test

  PCR results of SARS-CoV-2 for all participants

Positive

3717 (27.7%)

3034 (26.1%)

6751 (27.0%)

0.0036*

Chi-Square Test

Negative

9692 (72.3%)

8601 (73.9%)

18,293 (73.0%)

Total

13,409 (53.5%)

11,635 (46.5%)

25,044 (100.0%)

  Age of neonates/days at the time of sampling

5.2 ± 7.8 (1–28 days)

4.1 ± 5.7 (1–27 days)

4.7 ± 6.9 (1–28 days)

0.956 Mann-Whitney U Test

  Age groups of neonates (days)

1–10

43 (87.8%)

46 (93.9%)

89 (90.8%)

0.500

Chi-Square Test

11–28

6 (12.2%)

3 (6.1%)

9 (9.2%)

  PCR results of SARS-CoV-2 of all neonates

Positive

6 (12.5%)

0 (0.0%)

6 (6.1%)

0.013^a

Chi-Square Test

Negative

43 (87.5%)

49 (100.0%)

92 (93.9%)

  Age of mothers/years at the time of sampling

–

–

30.8 ± 5.1 (17–41 years)

–

  Age groups of mothers (years)

15–20

–

–

4 (4.1%)

–

21–25

–

–

12 (12.2%)

26–30

–

–

32 (32.7%)

31–35

–

–

30 (30.6%)

35–40

-

–

18 (18.4%)

> 40

–

–

2 (2.0%)