ArticleJournal of clinical microbiology2003
Continued low rates of transmission of Mycobacterium tuberculosis in Norway.
Article in Journal of clinical microbiology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.
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Who cites it
29 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.
- Laboratory Cross-Contamination of Mycobacterium tuberculosis: A Systematic Review and Meta-analysis.Lung · 2019Pooled it
- Antimicrobial resistance among migrants in Europe: a systematic review and meta-analysis.The Lancet. Infectious diseases · 2018Pooled it
- Tuberculosis transmission between foreign- and native-born populations in the EU/EEA: a systematic review.The European respiratory journal · 2014Pooled it
- Transmission of tuberculosis between foreign-born and Finnish-born populations in Finland, 2014-2017.PloS one · 2021Article
- False-Positive Mycobacterium tuberculosis Detection: Ways to Prevent Cross-Contamination.Tuberculosis and respiratory diseases · 2020Article
- The Evolution of Genotyping Strategies To Detect, Analyze, and Control Transmission of Tuberculosis.Microbiology spectrum · 2018Review
- Genome-based transmission modelling separates imported tuberculosis from recent transmission within an immigrant population.Microbial genomics · 2018Article
- Description of the largest cluster of tuberculosis notified in Norway 1997-2011: is the Norwegian tuberculosis control programme serving its purpose for high risk groups?BMC public health · 2015Article
- Effectiveness and cost effectiveness of screening immigrants schemes for tuberculosis (TB) on arrival from high TB endemic countries to low TB prevalent countries.African health sciences · 2014Review
- Migrant tuberculosis: the extent of transmission in a low burden country.BMC infectious diseases · 2012Article
- Article
- Mycobacterium tuberculosis strains potentially involved in the TB epidemic in Sweden a century ago.PloS one · 2012Article
- Update on tuberculosis: TB in the early 21st century.European respiratory review : an official journal of the European Respiratory Society · 2011Review
- Evidence for waning of latency in a cohort study of tuberculosis.BMC infectious diseases · 2010Article
- Undocumented migrants in Switzerland: geographical origin versus legal status as risk factor for tuberculosis.Journal of immigrant and minority health · 2010Article
- Tuberculosis screening and follow-up of asylum seekers in Norway: a cohort study.BMC public health · 2009Article
- Screening for latent tuberculosis infection among undocumented immigrants in Swiss healthcare centres; a descriptive exploratory study.BMC infectious diseases · 2009Article
- School based screening for tuberculosis infection in Norway: comparison of positive tuberculin skin test with interferon-gamma release assay.BMC infectious diseases · 2008Article
- Nonlinear pattern of pulmonary tuberculosis among migrants at entry in Kuwait: 1997-2006.BMC public health · 2008Article
- Screening for tuberculosis infection among newly arrived asylum seekers: comparison of QuantiFERONTB Gold with tuberculin skin test.BMC infectious diseases · 2008Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this study, we determined the genetic diversity of Mycobacterium tuberculosis isolated in Norway from 1999 to 2001. The results were compared to those for strains isolated from 1994 to 1998. A total of 818 patients were diagnosed with tuberculosis (TB) during the last 3-year period. Of these cases, 576 (70%) were verified by culturing, and strains from 551 patients (96%) were analyzed by the IS6110 restriction fragment length polymorphism (RFLP) method. We excluded 13 strains (2.4%) from the analyses, since they were found to represent false-positive samples. A total of 67 strains (12%) that carried fewer than five copies of IS6110 were analyzed by spoligotyping. The strains were from 157 patients (29%) of Norwegian origin and 381 patients (71%) of foreign origin. The rate of diversity among all of the strains was 90%, while in 1994 to 1998 it was 87%. Clusters were assumed to have arisen from recent transmission; the degree of such transmission was 10% in 1999 to 2001, while for the whole 8-year period (1994 to 2001), it was 11%. Of the 109 patients diagnosed as being part of a cluster in 1999 to 2001, 89 were infected with a strain that carried more than four copies of IS6110. Among these 89 patients, 52 (58%) were infected with a strain that had already been identified in 1994 to 1998. The results indicated that most cases of TB in Norway were due to the import of new strains rather than to transmission within the country. This finding demonstrates that screening of immigrants for TB upon arrival in Norway needs to be improved. Outbreaks, however, were caused mainly by strains that have been circulating in Norway for many years.
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