值得强调的是，大多数微生物并不致病。

It should be noted that for the most part microbes do not cause disease.

youdao

值得庆幸的是，大部分细菌不致病，许多种是有用的。

Fortunately, most bacteria do not cause disease, and many are useful.

youdao

生物负载可能存在于原料、原料药的起始物料、中间体或原料药中的微生物的水平和种类(例如，致病的或不致病的)。

Bioburden The level and type (e. g. objectionable or not) of micro-organisms that can be present in raw materials, API starting materials, intermediates or APIs.

youdao

So, that was a naturally occurring attenuated virus that could be produced into a vaccine that didn't cause the disease.

因为天花病毒存在天然的衰减病毒,这种衰减病毒可以用来,直接生产不致病的疫苗

耶鲁公开课 - 生物医学工程探索课程节选

So, you couldn't introduce the live virus in because that would cause the disease not just immunity.

所以 不可以直接接种活体病毒,因为这会使人致病而不仅是引起免疫应答

耶鲁公开课 - 生物医学工程探索课程节选