Table 3 Frequency of Zika testing (n = 407 in 130 children).

From: Zika virus vertical transmission in children with confirmed antenatal exposure

 

No. of children

%

No. NEG every time

No. POS every time

No. changing from POS to NEG

No. changing from NEG to POS

Serum Zika RT-PCRa

109

     

 Once

67

61.5%

47

20

  

 Two time points

34

31.2%

21

0

11

2

 Three time points

6

5.5%

3

0

3

0

 Four time points

2

1.8%

0

0

1

1

Zika IgM Mac Elisab

112

     

 Once

72

64.3%

52

20

  

 Two time points

32

28.6%

17

1

12

2

 Three time points

7

6.3%

2

0

2

3

 Four time points

1

0.9%

0

0

0

1

Urine Zika RT-PCRc

73

     

 Once

64

87.7%

34

30

  

 Two time points

6

8.2%

3

0

3

0

 Three time points

3

4.1%

0

0

0

3

  1. aNumber of serum PCR tests (n = 161).
  2. bNumber of Zika IgM Mac Elisa (n = 161).
  3. cNumber of urine Zika RT-PCR (n = 85).