Coughing Young Girl --- Image by © Bloomimage/Corbis

Cold and Flu Season Center 

Learn about symptoms, treatment, and prevention of colds and the flu during the fall and winter months, their busiest time of the year.


Infectious Disease Center 

What is an infectious disease? Learn about diseases caused by bacteria, how long pink eye is contagious, how you get MRSA, and much more.


What Is Pneumonia? 

What is pneumonia? When air sacs in your lungs fill with fluid, you have pneumonia, usually a complication of the flu. Severe cases can be life-threatening.

Girl with head cold, mother caressing forehead --- Image by © Laurence Mouton/PhotoAlto/Corbis

Symptoms of a Cold 

Symptoms of a cold appear 1 to 3 days after exposure to a virus and vary from person to person. Here's a list of cold symptoms and solutions.


What Is the Flu? 

What the flu is may surprise you. It’s not one single virus. There are several types and frequent mutations. That’s why you need to get a flu shot every year.


Symptoms of the Flu 

The flu can be a mild to severe illness. It a contagious respiratory illness caused by flu viruses. Learn more about the symptoms of the flu here.


What Is Strep Throat? 

What is strep throat? About a third of children with a sore throat have a strep infection. The condition usually occurs between the ages of five and 15.


Where Germs Hide 

Neckties and handbags carry more microbes than you might guess. Ditto your smartphone and keyboard. Here's what you should know about where germs can hide.


Home Remedies for Coughing 

Try these home remedies for coughing. You probably have many of them in your kitchen. They are designed to soothe that nagging and persistent cough.