Colds and the flu

Illustration of airway structure
It is often hard to tell the difference between a cold and a flu. Most people who think they have the flu actually have a less serious respiratory tract infection. What's the difference between a cold and the flu? Does drinking lots of fluids help when you have a respiratory tract infection? And how can you lower your risk of infection? Test your knowledge here!
Über diese Seite

Updated on December 11, 2023

Next planned update: 2026


Institute for Quality and Efficiency in Health Care (IQWiG, Germany)

How we keep you informed

Follow us on Twitter or subscribe to our newsletter or newsfeed. You can find all of our films online on YouTube.