Table 2 Seroprevalence of diphtheria antibody, overall and by age group
From: Seroprevalence of diphtheria toxoid IgG antibodies in the Malaysian population
Age group | 4-category classification | 2-category classification | ||||
|---|---|---|---|---|---|---|
No protection (< 0.01 IU/mL) | Uncertain protection (0.01–0.099 IU/mL) | Immunization protection present (0.1–0.99 IU/mL) | Long-term immunization protection (> = 1.0 IU/mL) | Susceptible (< 0.1 IU/mL) | Protected (> = 0.1 IU/mL) | |
n % (95% CI) | n % (95% CI) | n % (95% CI) | n % (95% CI) | n % (95% CI) | n % (95% CI) | |
Children (2–17 years) | 8 | 379 | 504 | 125 | 387 | 629 |
0.8 (0.4,1.6) | 37.3 (34.4,40.3) | 49.6 (46.5,52.7) | 12.3 (10.4,14.5) | 38.1 (35.2,41.1) | 61.9 (58.9,64.8) | |
Adults (18–60 years) | 70 | 1436 | 744 | 51 | 1506 | 795 |
3.0 (2.4,3.8) | 62.4 (60.4,64.4) | 32.3 (30.5,34.3) | 2.2 (1.7,2.9) | 65.4 (63.5,67.4) | 34.6 (32.6,36.5) | |
Overall | 78 | 1815 | 1248 | 176 | 1893 | 1424 |
2.4 (1.92.9 | 54.7 (53.0,56.4) | 37.6 (36.0,39.3) | 5.3 (4.6,6.1) | 57.1 (55.4,58.7) | 42.9 (41.3,44.6) | |