Among adults with signs and symptoms of pulmonary tuberculosis (TB), recognition of transmissible TB has implications for airborne infection isolation and public health activities. Sputum smear–negative TB patients account for around one-fifth of tuberculosis transmission. The tuberculosis transmission risk of TB patients with negative results on nucleic acid amplification test (NAAT) of respiratory specimens has not been established. We sought to estimate the tuberculosis transmission risk of NAAT-negative TB patients.

中文翻译：

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结核分枝杆菌从核酸扩增试验阴性的患者传播

在有肺结核 (TB) 体征和症状的成年人中，识别传染性 TB 对空气传播感染隔离和公共卫生活动有影响。痰涂片阴性结核病患者约占结核病传播的五分之一。呼吸道标本核酸扩增试验（NAAT）阴性的结核病患者的结核病传播风险尚未确定。我们试图估计 NAAT 阴性结核病患者的结核病传播风险。