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Volume 6, Number 3—June 2000

Dispatch

Mycobacterium tuberculosis Beijing Genotype Emerging in Vietnam

Dang Duc Anh*, Martien W. Borgdorff†, L.N. Van‡, N.T.N. Lan§, Tamara van Gorkom¶, Kristin Kremer¶, and Dick van Soolingen¶Comments to Author 
Author affiliations: *National Institute of Hygiene and Epidemiology, Hanoi, Vietnam; †Royal Netherlands Tuberculosis Association, The Hague, The Netherlands; ‡National Institute of Tuberculosis and Respiratory Diseases, Hanoi, Vietnam; §Tuberculosis and Lung Diseases Center, Ho Chi Minh City, Vietnam; and ¶National Institute of Public Health and the Environment, Bilthoven, The Netherlands

Main Article

Table 1

Beijing genotype of Mycobacterium tuberculosis in 563 new tuberculosis cases, by age and BCG status, in Hanoi and Ho Chi Minh City, Vietnam, 1998

n Beijing genotype ORa (95% CIb)
n (%) Crude Adjustedc
Province
Hanoi 64 37 (58) 1 (p>0.05)
Ho Chi Minh City 499 264 (53) 0.8 (0.5-1.4)
Age group
<25 76 54 (71) 1 (p<0.001) 1
25-34 173 102 (59) 0.6 (0.3-1.0) 0.6 (0.3-1.1)
35-44 164 83 (51) 0.4 (0.2-0.7) 0.4 (0.2-0.8)
45-54 74 31 (42) 0.3 (0.1-0.6) 0.3 (0.2-0.6)
55-64 39 16 (41) 0.3 (0.1-0.6) 0.3 (0.1-0.7)
65+ 37 15 (41) 0.3 (0.1-0.6) 0.3 (0.1-0.7)
BCG scar
Yes 285 167 (59) 1(p<0.05) 1
No 278 134 (48) 0.7 (0.5-0.9) 0.9 (0.6-1.3)
Total 563 301 (54)

aOR, odds ratio.
bCI, confidence interval.
cAdjusted for age and BCG vaccination.

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