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  1. Measles in adults in Canada and the United States : implications for measles elimination and eradication.

    Article - En anglais

    Background Despite the implementation of mass school catch-up campaigns for measles in Canada, an outbreak of measles occurred in early 1997 mostly affecting the adult population.

    The higher incidence in Canada in adults led us to compare immunization policies and the evolution of measles among adults in Canada and the US.

    Methods Based on information gathered from both national immunization programmes and surveillance systems.

    Results Although the proportion of cases occurring in adults has increased tremendously in both countries in the past decade, there was no increase in measles incidence in these populations.

    The most likely factors to explain the higher rate of measles occurring in adults in Canada are the younger age at administration of first dose in Canada, the delay in implementation of a second dose policy in Canada compared with the US combined with the lack of prematriculation immunization requirements in Canadian colleges and universities, and the higher rate of overseas travel to and from Canada.

    The situation in Canada may also have been exacerbated by incomplete efforts to control measles for many years without attempting to eliminate the disease.

    Conclusions In order to prevent measles in adults, high-risk groups must be identified and catch-up for selected groups considered.

    Vaccination of international travellers to endemic areas should be recommended until global elimination has been achieved. (...)

    Mots-clés Pascal : Rougeole, Virose, Infection, Vaccination, Epidémiologie, Incidence, Evolution, Adulte, Homme, Canada, Amérique du Nord, Amérique, Etats Unis, Etude comparative

    Mots-clés Pascal anglais : Measles, Viral disease, Infection, Vaccination, Epidemiology, Incidence, Evolution, Adult, Human, Canada, North America, America, United States, Comparative study

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0148294

    Code Inist : 002B05C02J. Création : 16/11/1999.