How Long Is Pink Eye Contagious? 

Also known as conjunctivitis, pink eye is a common condition, spreads easily, and is simple to treat. Learn what pink eye is and how long it is contagious.

What is C. diff?  

When people ask, “What is C. diff?” they are really asking two questions: One: What is the illness like and, two, what causes it. Learn more.

What Do You Know About Tuberculosis?

Many people think tuberculosis (TB) is no longer a threat, but it's still a leading killer worldwide. One-third of the world’s population (about 2 billion people) are infected with the bacteria that cause TB.

1. How do you get TB?

How Do You Get Cellulitis? 

Cellulitis causes pain, blindness, even death. How do you get cellulitis? Find out your risk and how to treat this skin dangerous infection.

Symptoms of Sinus Infection 

Is it a cold or sinus infection? Learn the symptoms of sinus infection, whether you need antibiotics, and which home remedies are effective.

How Long Is Mono Contagious?  

Mono virus lasts in saliva for up to 18 months after your symptoms ease up, but it’s impossible to know exactly how long mono is contagious.

Learn About Zika Virus 

It's not just bites from Zika-carrying mosquitoes that result in the infection. Humans can spread the virus, too.