What is a viral infection and can u catch it?

Viral illness: A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses. Viruses are generally contagious. Depending on the virus, they can be transmitted by airborne pathways, or body fluids, etc. Some viruses are easier to contract than others. Proper hand washing and hygiene remains the number one way to prevent the spread of infection.