In an inactivated vaccine, the coronaviruses are already killed or made into the ones unable to produce more new viruses.

在灭活疫苗中，冠状病毒已经被杀死或被处理至无法产生更多的新病毒。

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The flu vaccine is comprised of killed or inactivated virus (three most likely strains of flu virus based on predictions from the previous flu season).

FORBES: 2013 Flu Season: How to Protect Yourself