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健康问题是当今社会的重大问题,它不仅关系到个人和家庭幸福,而且关系到经济发展和社会进步,关系到国家前途和民族未来。综观历史,人类健康水平的提高与科学技术的进步密不可分。上世纪五六十年代以前,威胁人类健康的疾病主要是病原体感染性疾病,如致病性细菌引起的各种传染病(天花、霍乱等)。随着疫苗、抗生素的发明及其在人群中接种的普及,致病菌所引起的各种疾病已经得到有效控制,有的传染病(如天花)已被WHO宣布为彻底消灭。疫苗和抗生素的问世,为人
Health is a major issue in our society today. It is not only related to the happiness of individuals and families, but also to economic development and social progress, and concerns the future of our country and the future of our nation. Looking at history, the improvement of human health is inextricably linked with the progress of science and technology. Before the fifties and sixties of last century, the diseases that threaten human health are mainly pathogenic infectious diseases such as infectious diseases caused by pathogenic bacteria (smallpox, cholera, etc.). With the invention of vaccines, antibiotics and their popularity in the population, various diseases caused by pathogens have been effectively controlled. Some infectious diseases such as smallpox have been declared by WHO to be completely eliminated. The advent of vaccines and antibiotics, human