What you need to know about the flu
The flu (or influenza) is caused by a virus. It can be spread through droplets created from a cough, sneeze or just from talking. The flu virus infects your chest and lungs. This is different than the "stomach flu" which is often caused by bacteria and other viruses in your stomach. Illness from the flu can range from mild to severe and can sometimes cause death. Since the flu is caused by a virus, it cannot be treated with antibiotics.
The best way to prevent the flu is to get the flu vaccine (shot) every year.