What is the flu?
The flu is a highly contagious respiratory infection caused by influenza viruses. The virus usually enters the body through mucus membranes in the mouth, nose, or eyes. When a person with the flu coughs or sneezes, the virus then becomes airborne and can be inhaled by anyone nearby. You can also get the flu if you’ve touched a contaminated surface like a telephone or a doorknob and then touch your nose or mouth.
Is it a cold or the flu?
|Signs & Symptoms||Influenza||Cold|
|Fever||Usual; lasts 3-4 days||Rare|
|Aches||Usual; often severe||Slight|
|Chest discomfort, cough||Common; can be severe||Mild to moderate; hacking cough|