[Epidemiological study of a tuberculosis case in a large manufacturing enterprise in Quebec].

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.

• Authors: M J Drolet, R Boisvert, S Déry, D Laliberté
• Journal: Canadian journal of public health = Revue canadienne de sante publique (Can J Public Health) 1999 May-Jun Vol. 90 Issue 3 Pg. 156-9 ISSN: 0008-4263 [Print] Switzerland
• Vernacular Title: Enquête épidémiologique sur un cas de tuberculose dans une grande entreprise manufacturière québécoise.
• PMID: 10401163 (Publication Type: English Abstract, Journal Article)

Topics

• Adult
• Age Distribution
• Epidemiologic Studies
• Humans
• Industry
• Male
• Middle Aged
• Occupational Diseases (diagnosis, epidemiology)
• Prevalence
• Quebec (epidemiology)
• Surveys and Questionnaires
• Tuberculin Test
• Tuberculosis, Laryngeal (diagnosis, epidemiology, transmission)
• Tuberculosis, Pulmonary (diagnosis, epidemiology, transmission)