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Table 2 Demographic characteristics and frequency of ICSRs per antigen or vaccine

From: Adverse events following immunisation (AEFI) reports from the Zimbabwe expanded programme on immunisation (ZEPI): an analysis of spontaneous reports in Vigibase® from 1997 to 2017

Variable

Total ICSRs (N = 272) n (%)a

Vaccine

P value

BCG (N = 16) n (%)a

Measles (N = 93) n(%)a

Measles inappropriate (N = 40) n (%)a

OPV/DTP booster (N = 7) n (%)a

OPV/DTP-Hib-HepB (N = 107) n (%)a

Unclassified (N = 9) n (%)a

ICSR completeness Mean ± SE

0.81 ± 0.01

0.79 ± 0.04

0.82 ± 0.02

0.87 ± 0.01

0.82 ± 0.05

0.79 ± 0.02

0.61 ± 0.04

< 0.0001

Gender

 Male

150 (55.3)

7 (43.7)

55 (59.8)

22(55.0)

4 (57.1)

59 (55.1)

3(33.3)

0.641

 Female

121(44.7)

9(56.3)

37(40.2)

18 (45.0)

3(42.9)

48 (44.9)

6(66.7)

 

 Male: female Ratio

1.24

0.78

1.49

1.22

1.33

1.23

0.50

 

Age (months)

 Median

12

2.5

72

17

60

5

5

< 0.0001

 Range

0–168

0–11

9–168

4–48

17–60

0–12

3–6

 

Number of AEFIsb

387 (100.0)

20(5.2)

136(35.1)

60(15.5)

10(2.6)

152(39.3)

9(2.3)

< 0.0001

AEFI/ICSR ratio

1.42

1.25

1.46

1.50

1.43

1.42

1.00

 

Severity of ICSR

 Serious

30(11.0)

2(12.5)

6(6.5)

7(17.5)

1 (14.3)

14(13.1)

0(0.0)

0.371

 Not serious

242(89.0)

14(87.5)

87(93.5)

33(82.5)

6(85.7)

93(86.9)

9(100.0)

 

Seriousness of ICSR

Prolonged Hospitalisation

4(1.5)

0(0.0)

1(1.1)

0(0.0)

0(0.0)

3(2.8)

0(0.0)

0.051

Life Threatening

10(3.7)

0(0.0)

3(3.2)

4(10.0)

1(14.3)

2(1.9)

0(0.0)

0.156

Death

16(5.9)

2(12.5)

2(2.2)

3(7.5)

0(0.0)

9 (8.4)

0(0.0)

0.001

  1. Key: acolumn percentages; brow percentages