1　流行病学研究方法 (按工作性质分类 )1.1　病例 (病家 )调查　对急性传染病和结核病的散发患者须进行病例调查。其目的是获得下列问题的答案 :他是怎样被传染的 ?传染过程发生在本地还是外地 ?在患者家中、同院和有关单位还有哪些人有潜在发病的危险 ?从而采取紧急措施 ,比 1 Epidemiological research methods (by nature of work) 1.1 Case (sick) survey Patients with acute infectious diseases and tuberculosis should be subject to case investigation. The purpose is to obtain answers to the following questions: How is he infected? Does the infection occur locally or in the field? Who else in the patient’s home, in the same household and in the relevant unit is at risk of developing a potential risk? To take urgent measures,