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Enquête épidémiologique sur un cas de tuberculose dans une grande entreprise manufacturière québécoise

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Résumé

Objectifs: Déterminer la prévalence de l’Infection tuberculeuse reliée à un cas de tuberculose pulmonaire et laryngée et documenter les prédicteurs d’un PPD positif dans une entreprise.

Méthodes: Les contacts recensés ont subi l’épreuve de Mantoux (PPD) et ont répondu à un questionnaire.

Résultats: Des 112 travailleurs exposés, 92 (82,1%) ont été testés. Au seuil de 5 mm, 65,2% des travailleurs ont un PPD positif. En contrôlant le BCG antérieur et l’intensité de l’exposition, les résultats démontrent que l’âge est relié au PPD (RC: 3,5; IC 95%: 1,25–10,03). En contrôlant pour l’âge et le BCG, une exposition élevée est significative-ment reliée à la positrvité du PPD (RC: 5,6; IC95%: 1,25–24,68).

Conclusion: Le taux observé est probablement lié au fait que le cas-index était très contagieux, qu’il a eu des contacts dans un milieu fermé et durant une longue période avant d’être retiré du travail.

Abstract

Objectives: To determine the prevalence of tuberculosis infection related to a case of pulmonary and laryngeal tuberculosis in a workplace and to study PPD predictors.

Methods: The Mantoux skin test (PPD) was offered to all potentially infected contacts. Participants were asked to answer a questionnaire.

Results: Among 112 exposed employees, 92 (82.1%) were tested. At the 5 mm level, 65.2% of employees had positive tuberculin skin test (PPD). By controlling prior BCG and the degree of exposure, it showed a positive association between age and PPD (RC: 3.5; 95% CI: 1.25–10.03). When age and BCG were controlled, high exposure was statistically associated with PPD results (RC: 5.6; 95% CI: 1.25–24.68).

Conclusion: The observed prevalence rate is probably related to the fact that the index case was very infectious and had contact in an enclosed area over a long period of time before withdrawal from work.

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Authors and Affiliations

  1. Régie régionale de la santé et des services sociaux de la Mauricie et du Centre-du-Québec, Direction de la santé publique, Province de Québec, Canada

    Marie-Josée Drolet MD, MSc, FRCPC & Réal Boisvert MSc

  2. Régie régionale de la santé et des services sociaux du Nunavik, Direction de la santé publique, Province de Québec, Canada

    Serge Déry MD, MSc, FRCPC

  3. Régie régionale de la santé et des services sociaux de Québec, Centre de santé publique de Québec, Province de Québec, Canada

    Denis Laliberté MD, MSc, FRCPC

Authors
  1. Marie-Josée Drolet MD, MSc, FRCPC
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  2. Réal Boisvert MSc
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  3. Serge Déry MD, MSc, FRCPC
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  4. Denis Laliberté MD, MSc, FRCPC
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Correspondence to Marie-Josée Drolet MD, MSc, FRCPC.

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Drolet, MJ., Boisvert, R., Déry, S. et al. Enquête épidémiologique sur un cas de tuberculose dans une grande entreprise manufacturière québécoise. Can J Public Health 90, 156–159 (1999). https://doi.org/10.1007/BF03404497

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