Comment by shevy-java

"Lots of viruses are really oncogenic."

Hmm. Compared to what measurement? Most viruses are actually not oncogenic.

From cancer causes, oncogenic viruses are thought to be responsible for about 12% of human cancers worldwide:

https://www.mdpi.com/2079-7737/14/7/797

From what I remember, most viruses are not oncogenic in nature, so I am unsure whether the statement made is correct.