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Volume 9, Number 12—December 2003

Research

Mycobacterium tuberculosis Beijing Genotype1

Troels Lillebaek*Comments to Author , Åse B. Andersen†, Asger Dirksen‡, Judith R. Glynn§, and Kristin Kremer¶
Author affiliations: *National Institute for Prevention and Control of Infectious Diseases and Congenital Disorders, Copenhagen, Denmark; †Rigshospitalet University Hospital, Copenhagen, Denmark; ‡Gentofte University Hospital, Gentofte, Denmark; §London School of Hygiene and Tropical Medicine, London, United Kingdom; ¶National Institute of Public Health and the Environment, Bilthoven, the Netherlands

Main Article

Table 1

Proportion of tuberculosis patients with Beijing family strainsa


Denmark-born

Non–Denmark-born

Total
N/N (%) N/N (%) N/N (%)






All
17/1,659 (1.0)

79/2,183 (3.6)

96/3,844 (2.5)






Male
9/1,057 (0.85)

49/1,163 (4.2)

58/2,220 (2.6)
Female
8/602 (1.3)

30/1018 (3.0)

38/1,620 (2.4)






Age group (y)





< 25
2/118 (1.7)

21/655 (3.2)

23/773 (3.0)
25–44
7/553 (1.3)

48/1,159 (4.1)

55/1,712 (3.2)
45–64
4/522 (0.77)

6/247 (2.4)

10/769 (1.3)
65+
4/466 (0.86)

4/121 (3.3)

8/587 (1.4)






Y





1992–93
4/335 (1.2)

12/249 (4.8)

16/584 (2.7)
1994–95
2/371 (0.54)

19/418 (4.6)

21/789 (2.7)
1996–97
2/330 (0.61)

16/506 (3.2)

18/836 (2.2)
1998–99
4/316 (1.3)

15/555 (2.7)

19/871 (2.2)
2000–01
5/307 (1.6)

17/455 (3.7)

22/764 (2.9)






Area of origin





Western Europe
17/1,659 (1.0)

0/71 (0.0)

17/1,730 (0.98)
Eastern Europe


0/174 (0.0)


Indian subcontinent


8/290 (2.8)


South East Asia


37/183 (20.2)


East Asia and Pacific


3/10 (30.0)


Middle East


6/211 (2.8)


North Africa


1/38 (2.6)


Sub–Saharan Africa


20/1,111 (1.8)


Americas and Caribbean


0/16 (0.0)








Previous TB





No
17/1550 (1.1)

78/2164 (3.6)

95/3,716 (2.6)
Yes
0/109 (0.0)

1/19 (5.3)

1/128 (0.79)






Site of TB





Pulmonary
16/1,394 (1.2)

56/1248 (4.5)

72/2,642 (2.7)
Extrapulmonary 1/263 (0.38) 23/930 (2.2) 24/1,193 (2.0)

aInformation on immigration status missing for three patients; on region of origin for 81; on age for 3; on sex for 4; and on site of tuberculosis (TB) for 9.

Main Article

1Troels Lillebaek was responsible for the grant preparation, study design, execution, data analysis, and writing. Asger Dirksen and Åse B. Andersen supervised all parts of the study and contributed, with Judith Glynn and Kristin Kremer, critical revisions of the paper.

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