There is none , because viruses aren't alive. A virus straddles the fuzzy boundary between living and dead. That's why biologists and doctors talk about "inactivated" or "attenuated" viruses, not "dead" viruses. It's helpful to think of a virus as a machine.Are viruses considered living or non living?
Viruses are considered to NOT be a nonliving because they lack many properties of living organisms. Viruses don't have the ability to make their own chemical products and need a host cell to do that for them. That is why they can't reproduce without a host cell.