TAILIEUCHUNG - EVALUATION OF DIFFERENT TYPES OF CHEST SYMPTOMS FOR DIAGNOSING PULMONARY TUBERCULOSIS CASES IN COMMUNITY SURVEYS

Tuberculosis (TB) is prevalent in India and continues to be a leading cause of death1. Its control programmes can achieve a high level of treatment success2 and are associated with a decline in reported disease burden3. This is possible only if there is an effective TB control programme like the Directly Observed Treatment - Short Course (DOTS) aimed for higher cure and case detection. When the programme is successful, more cases will be detected and treated successfully. This will result in cutting the transmission in the community. Prevalence of the disease is estimated by undertaking epidemiological survey in the community and it involves researchers, trained field workers, X-ray units, X-ray films, sputum bottles, laboratory. | Original Article EVALUATION OF DIFFERENT TYPES OF CHEST SYMPTOMS FOR DIAGNOSING PULMONARY TUBERCULOSIS CASES IN COMMUNITY SURVEYS P. G Gopi R. Subramani and . Narayanan Received on . Accepted after revision on Summary Background Prevalence of tuberculosis TB is an important epidemiological index to measure the load of the disease in a community. A series of disease surveys were undertaken in rural community in Tiruvallur district in Tamilnadu south India Objective To investigate the yield of pulmonary tuberculosis TB cases by different symptoms status and suggest predominant symptoms for detection of cases in the community based surveys. Methods Three disease surveys were conducted during 1999-2006 in a random sample of 82 000 adults aged 15 years to estimate the prevalence and incidence of pulmonary TB. All subjects were screened for chest symptoms and chest radiography. Sputum examination was done among those who were either symptomatic or abnormal on X-ray or both. Cases observed through symptom inquiry were included for analysis. Results In survey-I had cough of 14 days and yielded of the total cases. In surveys II and III symptomatic subjects with cough contributed and of the cases respectively. In survey I had symptoms without cough but with at least chest pain 1 month contributed of total cases. The corresponding proportions in subsequent surveys were and respectively. The number of symptomatics without cough and chest pain but with fever 1 month was negligible. Conclusion The relative importance of cough as a predominant symptom was reiterated. The yield of pulmonary TB cases from symptomatics having fever of 1 month was negligible. Fever may be excluded from the definition of symptomatics for screening the population in community surveys. Indian J Tuberc 2008 55 116-121 Key words Prevalence Chest symptoms Tuberculosis DOTS INTRODUCTION Tuberculosis TB is prevalent in India and continues

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