1 of 2 / Common Cold
View AllWhat Is a Cold?
A cold begins when a virus attaches to the lining of your nose or throat.
What's Causing My Cold?
Cold viruses have a lot in common, but each type has its own style, too.
Is It a Common Cold or Allergies?
It's a question that puzzles lots of folks when symptoms hit: Is all that coughing and sneezing from a cold or hay fever?
What Puts You at Risk for the Common Cold?
2 of 2 / Flu (Influenza)
View AllDo You Have a Cold or Flu?
Do you feel under the weather and wonder if you're sick with the flu or a cold?
Flu Test: How to Find the Virus
A doctor can usually tell if you have the flu based on your symptoms, especially if it’s during peak season.
Bird Flu (H5N1)
Bird flu, or avian influenza, is a viral infection spread from bird to bird. The most common kind is the H5N1 strain.
Swine Flu (H1N1)
While swine flu isn't as scary as it seemed a few years ago, it's still important to protect yourself from getting it.
Suggested Reads about Cold and Flu
Is Cipro Safe? Know the Risks of Fluoroquinolones
Is a fluoroquinolone the right antibiotic for you? This WebMD slideshow can help you consider the risks and benefits for your condition before you choose.
What Caused Your Cough?
You have an annoying cough, and you’re not sure why. Many things can be behind it. Find out about some of those In this WebMD slide show.
Exercising When Sick: A Good Move?
You're not feeling your best. Should you exercise when sick or sit this one out? How to make the call.
Treating Flu at Home: 10 Natural Remedies
Simple home remedies can be all you need to relieve mild to moderate flu symptoms. Try these 10 natural remedies for flu.
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