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
Diane E. Bennett*
, Ida M. Onorato*, Barbara A. Ellis*, Jack T. Crawford*, Barbara Schable*, Robert Byers*, J. Steve Kammerer*, and Christopher R. Braden*
, Ida M. Onorato*, Barbara A. Ellis*, Jack T. Crawford*, Barbara Schable*, Robert Byers*, J. Steve Kammerer*, and Christopher R. Braden*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 |
