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[Tuberculosis trends in Norway--has the decline stopped?]
E Heldal1, K Bjartveit, A Tverdal
1Statens helseundersøkelser, Postboks 8155 Dep, Oslo.
Summary
Tuberculosis incidence in Norway has declined significantly since 1950, though the rate slowed in recent decades. While new infections are rare in native Norwegians, immigrant cases have risen substantially.
Area of Science:
- Epidemiology
- Public Health
Context:
- Tuberculosis (TB) trends in Norway since 1950.
- Analysis of incidence, mortality, and infection rates.
- Comparison with European incidence levels.
Purpose:
- To present the long-term trends of tuberculosis in Norway.
- To analyze changes in TB incidence and mortality rates.
- To examine infection rates among school leavers.
Summary:
- Tuberculosis incidence declined until the late 1980s, with a slower rate of decline in recent years.
- Mortality and infection prevalence trends mirrored the incidence decline after the mid-1970s.
- The proportion of TB cases among immigrants increased from 4% in 1977 to 40% in 1993.
Impact:
- Norway exhibits one of the lowest tuberculosis incidence rates in Europe.
- The incidence rate of infectious pulmonary tuberculosis has steadily declined in the Norwegian-born population.
- New tuberculosis infections are rare in native Norwegians, with cases primarily in the elderly.