即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。
Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.
还是用一段乐观的旋律来结束这篇文章吧。医学上可能会有一些重大的突破：科学家可能研制出疫苗对抗hiv；或是找到治疗帕金森症的方法；甚至可能是治愈最普通的感冒的办法。
But let us end on an optimistic note, by happily taking long odds on medical breakthroughs: a vaccination against HIV; a cure for Parkinson's disease; even a cure for the common cold.
当时，医生们仅仅披露，使用“腺病毒”或者感冒病毒将HIV的基因植入人体的疫苗没有发生作用。
At the time, doctors revealed only that the vaccine-which USES an "adenovirus," or the common cold virus, to deliver HIV genes into the body-had not worked.
如今，这两个研究小组都无法对具有这种感冒病毒抗体的受试者注射艾滋病疫苗后反而易感染艾滋病病毒这一现象作出科学合理的解释。
Now, the two study groups are unable to have such a cold virus antibodies were injected after the AIDS Vaccine AIDS virus but susceptible to the phenomenon of scientific and rational explanation.
据悉，对5型腺病毒(普通感冒病毒)具有免疫力的志愿者感染HIV的几率更高，这种感冒病毒是该艾滋病疫苗的关键组成部分。
It is learnt that the adenovirus type 5 (common cold virus) has immunity volunteers a higher risk of HIV infection, the flu virus is the key to AIDS vaccine components.
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.
本文阐述了流感病毒的发现、生物学特性、分类，流感的临床表现及其与普通感冒的鉴别，分析总结了流感疫苗的制备、接种和流感的常规防治；
Then the paper describes the production and inoculation of influenza vaccine and the conventional prevention regulation and treatment of influenza. At last, it puts forward compr…
本文阐述了流感病毒的发现、生物学特性、分类，流感的临床表现及其与普通感冒的鉴别，分析总结了流感疫苗的制备、接种和流感的常规防治；
Then the paper describes the production and inoculation of influenza vaccine and the conventional prevention regulation and treatment of influenza. At last, it puts forward compr…
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