It is also used during production of specific vaccines, for example certain pertussis (whoopingcough) vaccines, as part of the manufacturing process that makes the product safe and effective.
作为生产过程中使产品安全有效的组成部分,它也被用于特定疫苗的生产,例如,某些百日咳疫苗。
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That can be a sign of pertussis, or whoopingcough, which can be serious and has been more prevalent in the past few years.