But this doesn't mean there are no viruses that affect the Archaea.

但是这也并不意味着没有病毒可以影响到古生菌。

youdao

No viruses were observed in pulification liquid and super thin sections of diseased tissue.

病组织提取液及病组织超薄切片中未发现病毒颗粒。

youdao

Children get diseases from a class of viruses called rotaviruses, for which we have no vaccine, and- and so no way to protect them.

儿童因轮状病毒而生病,而我们没有针对这种病毒的疫苗,所以,所以我们没有办法保护儿童

耶鲁公开课 - 生物医学工程探索课程节选

The creators of the OS denied it was infected with viruses adding that, in the world of open-source software, "there were no viruses".

BBC: Anonymous operating system prompts security warnings

There are no live viruses in the vaccine.

CNN: In the future, get vaccinated earlier

And while there are no cases of WAP viruses to date, the potential threat is significant.

CNN: Company scans for viruses targeting PDAs, WAP devices