Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping

Tuberculosis Genotyping Network, United States

Genotyping Analyses of Tuberculosis Cases in U.S.- and Foreign-Born Massachusetts Residents

Sharon Sharnprapai* , Ann C. Miller*, Robert Suruki*, Edward Corkren*, Sue Etkind*, Jeffrey Driscoll†, Michael McGarry†, and Edward Nardell*‡

Author affiliations: *Massachusetts Department of Public Health, Boston, Massachusetts, USA; †New York State Department of Health, Wadsworth Center, Albany, New York, USA; ‡Harvard Medical School, Boston, Massachusetts, USA;

Main Article

Table 4

Molecular clustering of tuberculosis (TB) cases among foreign-born persons by time to TB diagnosis after arrival in the United States

Time to TB diagnosis	Cluster (%)	Nonclustered (%)	Odds ratio and 95% confidence interval (CI)	Chi square for trend a
<1 year of arrival	29 (16)	148 (84)	1.0	6.31 p =.012
1–5 years of arrival	38 (22)	139 (78)	1.40 (95% CI 0.79,2.47)
>5 years of arrival	86 (26)	244 (74)	1.80 (95% CI 1.10, 2.95)
Total	153 (22)	531 (78)

^aStatistically significant trend for overall link based on country of origin was observed at p<0.05

Main Article

Top of Page