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人的一生中经常与致病微生物接触,其结果一方面决定于微生物的毒力和其他内在特性;另一方面决定于机体免疫系统的功能.在正常情况下,大多数人的感染不出现症状,只有少数感染者出现症状,以致危及生命.自抗生素用于临床治疗后,由敏感菌所致的感染均可治愈.然而,随着抗生素的广泛使用,一系列并发症出现了,其中包括过敏反应、毒性、耐药菌株的产生、医院内交义感染和二重感染等.后三种并发症常见于免疫受抑制的病人.因为免疫反应是机体完全消灭入侵微生物所必需的.机体的免疫系统主要由四部分组成,即吞噬细胞、补体、B淋巴细胞和T淋巴细胞.微
Human life is often in contact with pathogenic microorganisms, the result of which is determined on the one hand by the virulence of microorganisms and other intrinsic properties; on the other hand, by the function of the body’s immune system. Under normal conditions, most people have no symptoms of infection , Only a small number of those infected with symptoms, resulting in life-threatening since antibiotics for clinical treatment, the infection caused by the susceptible bacteria can be cured However, with the widespread use of antibiotics, a series of complications have emerged, including allergies Reaction, toxicity, generation of drug-resistant strains, cross-infection in hospitals and double infection, etc. The last three complications are common in immunocompromised patients because the immune response is necessary for the body to completely destroy invading microorganisms. System consists of four parts, namely, phagocytic cells, complement, B lymphocytes and T lymphocytes.