Volume 8, Number 11—November 2002
THEME ISSUE
Tuberculosis Genotyping
Tuberculosis Genotyping Network, United States
DNA Fingerprinting of Mycobacterium tuberculosis Isolates from Epidemiologically Linked Case Pairs
Table 1
Characteristics of source and secondary cases in epidemiologically defined tuberculosis case pairs from seven states, 1996–2000
Characteristic | Tuberculosis case pairs (%) (n=538) |
|
---|---|---|
Source cases (%) (n=397) | Secondary cases (%) (n=538) | |
Gender | ||
Men | 62 | 60 |
Women | 38 | 40 |
Race/ethnicity | ||
White | 16 | 16 |
Black or African-American | 51 | 56 |
Hispanic | 17 | 15 |
Asian or Pacific Islander | 16 | 13 |
Age | ||
<15 yrs | 1 | 14 |
15–44 yrs | 61 | 54 |
44–65 yrs | 28 | 26 |
>65 yrs | 9 | 7 |
History of previous tuberculosis | 7 | 3 |
Foreign-born | 35 | 25 |
Pulmonary disease | 95 | 91 |
Negative sputum smear | 25 | 47 |
Cavitary disease | 47 | 22 |
Homeless | 9 | 7 |
Alcoholic | 27 | 22 |
Injection drug user | 6 | 5 |
HIV seropositive | 11 | 9 |