Comparative analysis of 2005,2009 tuberculosis drug resistance surveillance in Shenzhen

Objective To understand the situation of drug resistance( DR) and multi-drug resistance( MDRTB) tuberculosis in Shenzhen and provide scientific evidence for TB control in Shenzhen. Methods According to drug resistance TB guidelines issued by WHO/IUALD, all new smear positive cases and.new registered retreatment smear positive cases in 2005 and 2009 were included in the surveillance. A total of 1856 strains of mycobacterium tuberculosis were isolated and drug susceptibility test were performed with the proportional method. Results In 2005, the overall DR rate was 18. 3% , 17. 2% and 31. 3% for initial and acquired DR respectively, overall MDR rate was 4. 74% ,3.25% and 21.9% respectively for initial and acquired MDR. In 2009, the overall DR rate was 17.4% , 16% and 39. 3%for initial and acquired DR respectively,overall MDR rate was 3.8% ,3.02% and 16.4% respectively for initial and acquired MDR. In 2005,2009, the rates of acquired DR and acquired MDR were significantly higher than the rates of initial DR and initial MDR. Conclusion The incidence of TB drug resistance in Shenzhen was high and merits attention. Key words: Mycobacterium tuberculosis;  Drug resistance, bacterial;  Shenzhen