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Table 1 Age distribution and the median anti PT IgG levels of the study population

From: Seroprevalence of Bordetella pertussis specific Immunoglobulin G antibody levels among asymptomatic individuals aged 4 to 24 years: a descriptive cross sectional study from Sri Lanka

Age group

Number (%)

Median Anti-PT IgG IU/ml

IQR

A (4–7 years)

95 (24.68)

3.18

0.59–8.00

B (8–11years)

77 (20.0)

1.43

0.34–6.27

C (12–15 years)

59 (15.32)

4.28

0.98–13.39

D (16–19 years)

68 (17.66)

6.14

1.44–63.25

E (20–24 years)

86 (22.34)

4.89

1.11–16.78