How many viruses live in your body?

Virus:

1. A virus is an infectious microorganism made up of a protein-coated segment of nucleic acid (either DNA or RNA).
2. A virus can't multiply by itself; it has to infect cells to utilize the host cell's components to make copies of itself.
3. Ten times as many viruses as bacteria are currently residing on and inside of human bodies, according to estimates made by biologists.
4. While some can make us sick, many others just cohabit with us.