 If, like flu, the virus turns out to be seasonal, some cases could be delayed until next winter, by which time doctors will understand better how to cope with it. By then, new vaccines and antiviral drugs may be available. 如果像流感一样，这种病毒是季节性的，有些病例可能会被推迟到明年冬天，那时医生们将更清楚如何去应对。到那时，可能会有新的疫苗和抗病毒药物。 ——《经济学人》 基本释义 A vaccine is a substance containing a harmless form of the germs that cause a particular disease. It is given to people, usually by injection, to prevent them from getting that disease. n. 疫苗 18世纪时，英国医生琴纳（Edward Jenner）发现挤奶女工从来不会得天花。他认为，这是因为挤奶女工容易感染牛身上的一种轻微天花——牛痘（cowpox）。因此，琴纳想出了通过接种牛痘苗使人获得对天花的免疫力的方法。 1796年，琴纳的接种牛痘试验获得成功，从此，接种牛痘苗的方法得到大力推广，天花也随即销声匿迹。琴纳将用于人体接种的牛痘苗称为vaccine virus，其中vaccine来自拉丁语vaccinus（母牛的），原本是个形容词，后来演变为名词。现在，vaccine不仅可用来表示牛痘苗，还可以表示任何一种用于接种的疫苗。 antibody: Antibodies are substances that a person's or an animal's body produces in their blood in order to destroy substances that carry disease.（抗体） bacterin: a vaccine prepared from bacteria.（细菌疫苗） |
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