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  1. Fulltext. Environmental risk factors for Lyme disease identified with geographic information systems.

    Article - En anglais



    A geographic information system was used to identify and locate residential environmental risk factors for Lyme disease.


    Data were obtained for 53 environmental variables at the residences of Lyme disease case patients in Baltimore County from 1989 through 1990 and compared with data for randomly selected addresses.

    A risk model was generated combining the geographic information system with logistic regression analysis.

    The model was validated by comparing the distribution of cases in 1991 with another group of randomly selected addresses.


    In crude analyses, 11 environmental variables were associated with Lyme disease.

    In adjusted analyses, residence in forested areas (odds ratio [OR]=3.7,95% confidence interval [CI]=1.2,11.8%), on specific soils (OR=2.1,95% CI=1.0,4.4%), and in two regions of the county (OR=3.5,95% CI=1.0,7.7) was associated with elevated risk of getting Lyme disease.

    Residence in highly developed regions was protective (OR=0.3,95% CI=0.1,1.0).

    The risk of Lyme disease in 1991 increased with risk categories defined from the 1989 through 1990 data.


    Combining a geographic information system with epidemiologic methods can be used to rapidly identify risk factors of zoonotic disease over large areas.

    Mots-clés Pascal : Lyme maladie, Borréliose, Spirochétose, Bactériose, Infection, Système information, Géographie, Facteur milieu, Facteur risque, Epidémiologie, Maryland, Etats Unis, Amérique du Nord, Amérique, Homme

    Mots-clés Pascal anglais : Lyme disease, Borrelia infection, Spirachaetosis, Bacteriosis, Infection, Information system, Geography, Environmental factor, Risk factor, Epidemiology, Maryland, United States, North America, America, Human

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

    Cote : 95-0437206

    Code Inist : 002B05B02L6. Création : 01/03/1996.