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Volume 5, Number 5—October 1999

Dispatch

Diphtheria Antitoxin Levels in the Netherlands: a Population-Based Study

Hester E. de MelkerComments to Author , G.A.M. Berbers, N.J.D. Nagelkerke, and M.A.E. Conyn-van Spaendonck
Author affiliations: National Institute of Public Health and the Environment, Bilthoven, the Netherlands

Main Article

Table 1

Diphtheria immunity in a nationwide sample of persons ≤79 years of age, the Netherlands

<0.01 IU/ml 0.01-0.1 IU/ml ≥0.1 IU/ml Geometric mean titer
Sample No. (95% CIa) (95% CI) (95% CI) 
(95% CI)
Overall 7,715 11.9 (10.7-13.1) 30.0 (28.3-31.7) 58.1 (56.2-59.9) 0.12 
(0.11-0.13)
Men 3,644 9.3 (8.0-10.6) 28.1 (25.9-30.2) 62.6 (60.1-65.2) 0.14 
(0.13-0.16)
Women 4,071 14.4 (12.6-16.2) 31.6 (29.7-33.6) 54.0 (51.9-56.0) 0.10 
(0.09-0.11)

aCI, confidence interval.

Main Article

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