The common cold and the flu are both respiratory illnesses but they are caused by different viruses. The common cold is usually a mild illness caused by a variety of viruses. Symptoms can include a runny and congested nose, sore throat, sneezing, and coughing. The flu is a more severe illness caused by the influenza virus. Symptoms can include fever, chills, sore throat, cough, body aches, and fatigue. The flu can also lead to more serious complications, including pneumonia.

The best way to prevent colds and the flu is to practice good hygiene. Washing your hands often with soap and water, avoiding touching your face with unwashed hands, and avoiding close contact with people who are sick will help reduce your risk of getting sick. It is also important to get an annual flu vaccine to reduce your risk of getting the flu.