Quiz: Colds and the flu

Illustration: The airwaysIt 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!

Question 1 of 10

Vitamin C can prevent common colds.