Report on nationwide random survey for the epidemiology of tuberculosis in 2000

Abstract

Abstract: Objectives To realize the dynamic status of the epidemiological situation of tuberculosis in the Country and evaluate the efficacy of control measures as well as to provide the scientific basis for the preparation of The National Tuberculosis Control Program (2001～2010). Method The multi-stratified grouping random sampling method was used and the proportional sampling was utilized for the country as a whole. A total of 257 investigation points was sampled. Tuberculin testing was carried out among all children of 0～14 age group. Chest X-ray fluoroscopy was applied to all population ≥ 15 years of age and the testees of children with positive tuberculin reaction (≥10mm). Chest X-ray radiography, sputum direct smear and cultural examination were applied to all tuberculosis symptomatic with cough and expectoration more than three weeks and all examinees with abnormal finding during fluoroscopy. Sensitivity testing of anti-tuberculosis drugs was conducted for all isolated colonies from positive sputum cultural examination. Socio-economic study was carried out among all detected tuberculosis patients. The investigation of tuberculosis infection among whole population was conducted in 59 investigation points. A retrospective study of tuberculosis mortality was investigated. Results The actual examined population in this survey was 365097 and occupied 97.2% of the eligible population. The standardized prevalence of active, smear positive and bacteriological positive pulmonary tuberculosis were 367/ 100000, 160/100000 and 122/100000 respectively. The annual reduction rates between 1979 and 2000 for active and smear positive pulmonary tuberculosis were 4.5% and 3.8% respectively. The corresponding annual reduction rates between 1990 and 2000 were 5.4% and 3.2% respectively. The smear positive prevalence in project areas showed a 44.4% declining between 1990 and 2000 and it was only 12.3% in non-project areas. The epidemiological situation of tuberculosis in western areas of the Country was much serious than the national average. Conclusion The magnitude of tuberculosis in the Country was still serious and it was inequable in different areas. The improvement of the national epidemiological situation was rather sluggish.

Key words: Tuberculosis, Epidemiology, Random survey

National Technical Steering Group of the Epidemiological Sampling Survey for Tuberculosis. Report on nationwide random survey for the epidemiology of tuberculosis in 2000[J]. Chinese Journal of Antituberculosis, 2002, 24(2): 65-108.

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