据禁毒权威人士断定,没有一种药物或疫苗可以根治毒瘾,禁毒的最有效的方法就是预防。
It is concluded by some authorities that, no medicine or vaccine can eradicate drug addiction till now and prevention is the most effective strategy to resist drug.
方法符合临床诊断标准的急性播散性脑脊髓炎患者21例,18例发病前有病毒感染或疫苗接种史。
Methods 21 cases of clinically proven ADEM were retrospectively reviewed. 18 patients had a history of viral infection or vaccination prior to the onset of ADEM.
抛开工业方面的障碍,可能感冒难治的最大理由是,鼻病毒有很多类型而且对任何药物或疫苗都呈现出移动靶标。
Industry hurdles aside, perhaps the biggest reason the common cold has long defied treatment is that the rhinovirus has so many strains and presents a moving target for any drug or vaccine.
Again, these are antibodies that are specific to that antigen or vaccine that we introduced.
我再说一次,这些抗体针对于,我们所接种的抗原或疫苗特异产生
They're all over each other sometimes and they can spread saliva or other fluids.
有时候他们会在一起追跑打闹,病毒和疫苗可以通过唾液或其它体液传播
If this was tetanus, you got this tetanus vaccine when you were young; you get a boost every five or ten years because your antibody levels are starting to fall.
以破伤风为例,小时候,你接种过破伤风的疫苗,每隔五年或十年要再接种一次,这是因为体内的抗体浓度会下降
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