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化学预防主要用于结核菌素(简称结素)反应阳性者;在结核感染危险性高的地区,也可用于结素反应阴性者。假定选用有效药物方案,化学预防效果随所选择的病例而异,对结核风险大者预防效果可能较好。美国胸腔协会建议对以下人群应考虑化学预防,依次如下:①新发现的传染性结核病患者的家庭成员及其他密切接触者;②结索反应阳性,X 线有非活动性病变,以前未治疗者;③新感染者,即其皮试在前2年内转为阳性者,④皮试阳性,属于危险性特别高
Chemoprevention is mainly used for tuberculin (referred to as Nodularin) positive reaction; in areas with high risk of tuberculosis infection can also be used for patients with negative. Assuming that an effective drug regimen is selected, the chemopreventive effect varies with the selected case and may have a better prophylactic effect on the greater risk of tuberculosis. The American Thoracic Society suggests that chemical prophylaxis should be considered for the following groups of people: ① newly discovered family members of infectious tuberculosis and other close contacts; ② positive tubal reaction with non-active X-ray disease, previously untreated ; ③ newly infected persons, that is, their skin test turned positive in the previous 2 years, ④ skin test positive, are particularly dangerous high