because when it enter in body they become live and produce disease's out body they not produce disease.
There is no such thing. viruses are so very small that a living thing could not live inside one. But a virus inside a living thing could be called latent if it is not causing a disease or active if it is.
viruses
Hapyy birthday to you
Viruses need living cells for reproduction .
viruses are non living and bacteria are living organisms
viruses do not grow, and viruses do not respond to changes in their environment. Therefore, viruses are not living organisms. All living things reproduce, but Viruses need living cells to reproduce because Viruses cannot reproduce by themselves.
These are called viruses.
Viruses only infect living organisms and since they are not alive, they can not infect other viruses. The question is interesting though.
There actually living
Viruses depend on living cells because they reproduce inside of them.
Viruses are composed of two main parts: an outer protein covering called a capsid and an inside core of either DNA or RNA. Not both DNA and RNA. Living cells also contain DNA and RNA. These are the only thing shared by living cells and viruses.
Viruses need living cells to produce more viruses. They are obliged to use living cells.