Table 2.
Subnational Surveys in India
| Survey | Prevalence of TB (95% Confidence Interval)/100 000 Population | Bacteriological Confirmation Test | Criteria for Eligibility for Bacteriological Examination | S–X+ Cases (%) | S– Cases (%) |
|---|---|---|---|---|---|
| Tamil Nadu (India) 1999 | 605 | One culture-positive sample | S+ and/or X+ | 46.3 | 46.3 |
| Tamil Nadu (India) 2001 | 454 | Culture-positive | S+ and/or X+ and all known TB cases | 33.7 | 36 |
| Tamil Nadu (India) 2004 | 309 | Culture-positive | S+ and/or X+ and all known TB cases | 36.4 | 39.1 |
| Tamil Nadu (India) 2006 | 388 | Culture-positive | S+ and/or X+ and all known TB cases | 34.9 | 39.2 |
| Tamil Nadu (India) 2010 | 259 | Culture-positive | S+ and/or X+ and all known TB cases | 32.9 | 55 |
A list of references for included prevalence surveys is available in Supplementary Materials Appendix 1.
Abbreviations: S, symptoms; TB, tuberculosis; X, X ray.