Vaccination大学英语课件疫苗VIP免费

Whatisvaccination?Thepreventivebiologicalproductsofvaccineforhumanvaccinationisusedtopreventandcontroltheoccurrenceandepidemicofinfectiousdiseases.为了预防、控制传染病的发生、流行，用于人体预防接种的疫苗类预防性生物制品.PrincipleThevaccineisanautomaticimmunepreparationforthepreventionofinfectiousdiseases,whichismadebythemethodofartificialattenuated,inactivatedorusinggeneticallymodifiedorganismsandtheirmetabolites.疫苗是将病原微生物及其代谢产物，经过人工减毒、灭活或利用转基因等方法制成的用于预防传染病的自动免疫制剂.Thecharacteristicsoftheimmunesystemofthepathogenicbacteriawereretained.疫苗保留了病原菌刺激动物体免疫系统的特性.Whentheanimalisexposedtothepathogenthatisnotharmful,theimmunesystemwillproduceaprotectivesubstance.当动物体接触到这种不具伤害力的病原菌后，免疫系统便会产生一定的保护物质.Whentheanimalsexposedtothepathogenandtheimmunesystemoftheanimalbodywillfollowtheoriginalmemory,andmakemoreprotectivesubstancestopreventpathogendamage.当动物再次接触到这种病原菌时，动物体的免疫系统便会依循其原有的记忆，制造更多的保护物质来阻止病原菌的伤害。SignificanceItisthemostimportantmeanstocontrolofinfectiousdiseasesisprevention,andvaccinationisconsideredtobethemosteffectivemeasures.控制传染性疾病最主要的手段就是预防，而接种疫苗被认为是最行之有效的措施.“”exampleThesmallpoxviruswhichthreatenedhumanforhundredsofyearsalreadywascompletelywipedoutduetotheapperanceofvaccination.andwegetthefirstvictoryfightagainstwithvirusbyvaccination.威胁人类几百年的天花病毒在牛痘疫苗出现后便被彻底消灭了，迎来了人类用疫苗迎战病毒的第一个胜利。天花Smallpox吓死宝宝了！Now,inaccordancewiththeprovisionsoftheprogramofimmunizationprogram,thebabymustbevaccinated5kindsofvaccinationwitnin1years.如今，按照我国规定的计划免疫程序，宝宝必须在1岁内完成5种疫苗的接种.乙肝疫苗HepatitisBvaccine卡介苗BCG小儿麻痹糖丸Polio百白破制剂PreparationofDPT麻疹疫苗MeaslesvaccineTHANKSTHANKS