Viruses are part of other biological processes as well as keeping things in check. For example, there is a bunch of viral activity involved in human pregnancy.

Viruses are part of other biological processes as well as keeping things in check. For example, there is a bunch of viral activity involved in human pregnancy. A quick web search found this: https://pmc.ncbi.nlm.nih.gov/articles/PMC6177113/ https://pmc.ncbi.nlm.nih.gov/articles/PMC6177113/