The impact of immigration on the elimination of tuberculosis in The Netherlands: a model based approach
METHODS: The incidence of tuberculosis (all forms) in the period 1970 to 2030 was estimated using a life-table model for the Dutch population without the impact of immigration. The influence of immigration on tuberculosis incidence among the Dutch was modelled using four immigrant scenarios, distinguished by the assumed contact rate between immigrants and the Dutch population, and by different projections (middle, upper) of the future size of the immigrant population in The Netherlands.
RESULTS: The incidence of smear-positive tuberculosis among the Dutch is projected to be 1.4 per million in the scenario without the influence of immigrant cases, and ranging from 3.8 to 11.8 per million in the four immigrant scenarios. In all immigrant scenarios, the prevalence of tuberculosis infection will continue to decline and be less than 1% by the year 2030. At least 60% of Dutch tuberculosis cases in the year 2030 are expected to be the result of transmission from a foreign source case.
CONCLUSION: Using a prevalence of tuberculosis infection of less than 1% as the elimination criterion, tuberculosis will probably be eliminated from the indigenous Dutch population by 2030. However, the incidence of smear-positive tuberculosis is expected to remain higher than 1 per million, and the majority of new tuberculosis cases among the Dutch may be attributable to recent infection from a foreign source case.
Document Type: Regular Paper
Affiliations: 1: Pallas, Health Research and Consultancy, Rotterdam, The Netherlands 2: Royal Netherlands Tuberculosis Association, The Hague, The Netherlands and Department of Public Health (MGZ), Erasmus University, Rotterdam, The Netherlands 3: Royal Netherlands Tuberculosis Association, The Hague, The Netherlands
Publication date: 01 February 2002
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