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流行病学是研究人群中疾病和健康的分布 ,探索影响分布的因素 ,并在此基础上制定预防策略的措施的一门学科。一直以来 ,流行病学在感染性疾病的预防和治疗 ,感染性疾病危险因素的研究和控制方面都起着十分重要的作用。近二三十年来 ,生物学技术尤其是分子生物学技术取得了突破
Epidemiology is a discipline that studies the distribution of diseases and health in the population, explores the factors that influence the distribution, and, on that basis, formulates preventive strategies. Epidemiology has long played a very important role in the prevention and treatment of infectious diseases and in the research and control of risk factors for infectious diseases. In the past 20 to 30 years, biological technology, especially molecular biology technology, made a breakthrough