Flu Say: FLOO The short version of the word influenza. Back to Articles Related Articles Flu The flu is a virus that can make you sick for a week or longer. Find out more in this article for kids. Read More Flu Center The flu can make you sick for a week or more. Find out how to get protected from the influenza virus. Read More The Flu: Should You Go to School? Stay home or go to school? That's what you are probably wondering if you have the flu. Find out more. Read More The Flu: Stop the Spread Follow these tips to help prevent the spread of the flu. Read More Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.