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This study aimed to learn the recurrence rate in the retreatment TB patients with sputum smear and/or culture positive(ss+and/or c+)two years after they were declared cured,and to explore causes of recurrence in order to improve long-time treatment outcome.5 cities were selected as research locations.Recurrence of TB was judged by chest X-ray examination together with sputum smear and culture examination.Questionnaire was
This study aimed to learn the recurrence rate in the retreatment TB patients with sputum smear and / or culture positive (ss + and / or c +) two years after they were cured, and to explore causes of recurrence in order to improve long-time treatment outcome.5 cities were selected as research locations. Recurrence of TB was judged by chest X-ray examination together with sputum smear and culture examination. Questionnaire was