Skip to main content

Free Content Cohort analysis of asylum seekers in Oslo, Norway, 1987–1995: effectiveness of screening at entry and TB incidence in subsequent years

Download Article:
(PDF 110.9052734375 kb)


SETTING: Municipalities of Baerum and Oslo, Norway.

OBJECTIVES: To examine the effectiveness of tuberculosis (TB) screening in asylum seekers 1987–1995, and to describe TB incidence rates after arrival.

DESIGN: Register-based, retrospective cohort study of 19912 asylum seekers with a mean follow-up of 6.3 years.

RESULTS: Seventy-six persons were diagnosed with TB, of whom 43 (57%) had pulmonary TB. Twenty-two cases (17 pulmonary) were found through screening at entry. Eleven persons had abnormal mass miniature X-rays (MMRs), but had inadequate follow-up and were diagnosed later through passive case finding. MMR itself had a sensitivity of 96% and a specificity of 98% for pulmonary TB, diagnosed within 1 year after arrival. TB prevalence at entry was 110/100000; for Somalis it was 577/100000. Incidence rates were stable in the total cohort after arrival, whereas rates for extra-pulmonary TB in Somalis increased.

CONCLUSIONS: Screening on entry should continue, but follow-up of abnormal MMRs must be improved. There should be more emphasis on treatment of latent infection.

Keywords: MMR; asylum seekers; effectiveness; screening; tuberculosis

Document Type: Regular Paper

Affiliations: 1: Frogner Health Centre, Oslo, Norway 2: Public Health Authority, Oslo, Norway 3: Norwegian Institute of Public Health, Oslo, Norway 4: Department of International Health, Oslo, Norway

Publication date: 2005-01-01

More about this publication?
  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on tuberculosis and lung health world-wide.

    Certain IJTLD articles are selected for translation into French, Spanish, Chinese or Russian. They are available on the Union website

  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • International Journal of Tuberculosis and Lung Disease
  • Public Health Action
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more