Yes, but some viruses are more harmful than others.
They are harmful because it plants inside of you and it quickly multiply inside your stomach making more viruses
it can be harmful but we have antibiotics so they aren't as harmful as some viruses.
Harmful chemicals or viruses that can be transferred from a mother to her developing fetus are called teratogens.
Some viruses target harmful organisms. For example, bacteriophage viruses kill bacteria. Other viruses might kill mosquitoes or weevils or other harmful insects without hurting any other species.
Antibodies
Some viruses are beneficial in that they have commercial uses. Examples are tulips with streaks of color. Other viruses cause diseases such as colds, HIV.
Some viruses target bacteria or fungi, which can be harmful to humans. These viruses are called "bacteriophages" or sometimes just "phages".
Antibiotics
As harmful as the other viruses. You need to turn off your system restore and turn it back on .
Computer viruses have been known to cause millions of dollars worth of damage.
They can cause death and other diseases