Abstract: Objective This study aims to understand the role and effect of household survey and concentrated recommendation on pulmonary tuberculosis (PTB) case detection.  Methods TB suspects were detected through face to face inquiry and observation, and they were referred to designated hospitals through concentrated recommendation for screening. TB patients were confirmed by TB institutions.  Results In 2009, nine districts (counties) fully carried out this household survey. A total of 3 910 504 people were registered and 3 817 928 people were investigated, the investigation rate was 97.6%. 411 cases of active PTB were detected, among which 172 were new smear positive, accounting for 41.8%. This survey contributed 23.8% and 21.9% respectively in terms of new active case and smear positive case detection in local CDC during the same periods. 78.6% of PTB patients detected showed symptoms of cough, expectoration ≥2 weeks or hemoptysis, bloody sputum.   Conclusions Household survey and concentrated recommendation of TB suspects is an effective way in improving case detection. Household survey is conducive to the implementation of DOTS strategy and the increase of TB knowledge among general public, benefits understanding of TB prevention among township and village doctors. In addition, this survey could promote the active diagnosis and regular treatment, which ultimately improve PTB case detection.

Key words: tuberculosis, pulmonary/epidemiology, prevalence, Chendu city