viruses reproduce by attatching to a host cell and injecting their nucleic acid into the host cells chromosome, then they can either stay dormant or the will take over the cell, reproduce and then burst out of the cell which kills the host cell
A virus is technically non living and cannot reproduce by itself. In order for a virus to reproduce, the virus attaches itself to a host cell and literally injects its own viral material into the...
From someone who already has a virus that passes it on to you by sneezing coughing, or any of that stuff if you're in a cold. But if it's not, then answers may vary.