influenza symptoms

29 Jun 2011 ... CDC Centers for Disease Control and Prevention Influenza Flu: The flu is a 4 Aug 2010 ... The symptoms of influenza (flu) appear suddenly and often include: Fever, which 17 Feb 2011 ... Influenza (commonly called the flu) is a highly contagious illness that can occur in If you have flu symptoms and are at risk of complications, see your doctor right Symptoms of influenza can start quite suddenly one to two days after infection. ... The flu is a respiratory (i.e., nose, throat, and lung) infection that can be caused 3 Oct 2011 ... Usually, influenza lasts three to five days. If it goes on for more than a week or if What are flu symptoms in adults and in children? ... Flu symptoms also tend to 3 Feb 2012 ... Influenza � or the flu � is a virus that spreads quickly from person to person. Get the facts on influenza causes, treatment and vaccine side effects. Plus, learn