Â© 2018 USC Credit Union. All rights reserved. If you are using a screen reader or other auxiliary aid and are having problems using this website, please call (877) 670-5860 for assistance.
Viral infection: Infection caused by the presence of a virus in the body. Depending on the virus and the person's state of health, various viruses can infect almost any type of body tissue, from the brain to the skin.iral infections cannot be treated with typical antibiotics (antibacterial antibiotics); in fact, in some cases the use of antibacterial antibiotics may cause side-effects that complicate the viral infection.
Other common causes of viral infections can include the common cold, the flu, and viral pneumonia. Many viruses can cause symptoms which appear in the upper or lower respiratory tract, or both.astroenteritis is one type of viral infection that can have symptoms ranging from mild to severe. These infections can be caused by a number of viruses, and if the symptoms are severe you should seek medical treatment.