Analysis of Ethambutol resistance of Mycobacterium tuberculosis derived from tuberculosis patients in Suzhou city

Objective To investigate the ethambutol resistance of of Mycobacterium tuberculosis derived from tuberculosis patients diagnosed at the affiliated infectious hospital of soochow university in Suzhou.Methods From September 2008 to May 2011,the type of clinical isolates from the hospital were demonstrated and then the ethambutol resistance of Mycobacterium tuberculosis from the patients was analyzed by drug sensitive test.Results The total ethambutol-resistance rate was 10.7% and the ethambutol-resistance cases occupied a percentage of 56.1% in the multi-drug resistant tuberculosis.The total ethambutol-resistance rate and its percentage occupied in the multi-drug resistant cases arising during 2010~2011 was respectively 12.3% and 61.6%,which was profoundly higher than that occurred in 2008~2009.Conclusion The total ethambutol-resistance rate of Mycobacterium tuberculosis and its rate occurred in the multi-drug resistant cases from the tuberculosis patients in Suzhou city is high and present increasing.