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Table 1 Adverse drug reaction rates stratified by age, reported within 7 days of vaccination

From: Enhanced passive safety surveillance of a quadrivalent inactivated split virion influenza vaccine in Finland during the influenza season 2020/21

 

VC distribution (n)

Vaccinees reporting ≥ 1 ADR (n)

Vaccinees reporting rate (%) (95% CI)

ADRs (n)

ADR reporting rate (%) (95% CI)

ADR

1008

28

2.78 (1.85,3.99)

79

7.84 (6.25, 9.67)

PRAC ADRs of interest

1008

27

2.68 (1.77, 3.87)

72

7.14 (5.63, 8.91)

6–13 years of age

2

1

50.00 (1.26, 98.74)

3

150.00 (NE)

13–18 years of age

4

0

0.00 (0.00,60.24)

0

0.00 (0.00, 60.24)

18–65 years of age

937

25

2.67 (1.73, 3.91)

71

7.58 (5.97, 9.46)

 > 65 years of age

32

2

6.25 (0.77, 20.81)

5

15.63 (5.28, 32.79)

  1. Vaccinees reporting rate, number of vaccinees who reported ≥1 ADR divided by the number of vaccine cards distributed × 100%; ADR reporting rate, number of ADRs reported divided by the number of vaccine cards distributed × 100%
  2. ADR adverse drug reaction, CI confidence interval, NE not estimated
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BMC Public Health

ISSN: 1471-2458

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