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Featured Topics
body
Immune System
Your immune system is a network of organs, white blood cells, proteins and chemicals that work together to protect you from invaders (like germs) that can harm you.
symptoms
Cough
A cough is a natural reflex that helps you keep your airways clear. A cough may sometimes indicate a more serious condition.
diseases
Sore Throat (Pharyngitis)
A sore throat (pharyngitis) is a scratchy or burning feeling in your throat. Most sore throats happen because of a viral infection, like the common cold or flu.
diseases
Flu (Influenza)
The flu is a common illness you get from the influenza virus. You’re at risk for serious complications if you have an underlying health condition or are pregnant.
