Influenza (also known as the flu) is a contagious respiratory illness caused by flu viruses. It can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly.

Flu Symptoms Include:

• Fever* or feeling feverish/chills
• Cough
• Sore throat
• Runny or stuffy nose
• Muscle or body aches
• Headaches
• Fatigue (tiredness)
• Some people may have vomiting and diarrhea, though this is more common in children than adults.

*It's important to note that not everyone with flu will have a fever.

If I (or Family Members) Get the Flu

• Flu: What To Do If You Get Sick | Influenza (Flu) | CDC
• Parents: Help Children Fight Flu | Influenza (Flu) | CDC
• Cold Versus Flu | Influenza (Flu) | CDC