Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. Many times it is hard to tell whether we have a cold or the flu when we start sneezing and coughing. Here are ten symptoms to help you tell; followed by some tips to prevent and treat both.
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