Influenza Essay

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Influenza(Flu)  What is flu? What are the different types of flu? Influenza, commonly shortened to "flu," is an extremely contagious respiratory illness caused by influenza A or B viruses. Flu appears most frequently in winter and early spring. The flu virus attacks the body by spreading through the upper and/or lower respiratory tract. Type A flu - Influenza A viruses are capable of infecting people as well as animals; although it is more common for people to suffer the ailments associated with this type of flu. Wild birds commonly act as the hosts for this flu virus. Type A flu virus is constantly changing and is generally responsible for the large flu epidemics. The influenza A2 virus (and other variants of influenza) is spread by people who are already infected. Type B flu - Unlike type A flu viruses, type B flu is found only in humans. Type B flu may cause a less severe reaction than type A flu virus, but occasionally, type B flu can still be extremely harmful. Influenza type B viruses are not classified by subtype and do not cause pandemics. Type C flu - Influenza C viruses are also found in people. They are, however, milder than either type A or B. People generally do not become very ill from the influenza type C viruses. Type C flu viruses do not cause pandemics. Cold vs. Flu How to determine Flu Symptoms Unlike symptoms of a common cold, flu symptoms usually come on suddenly. It often starts with the abrupt onset of fever, headache, fatigue, and body aches. Here's a list of flu symptoms you might feel: • • • • • • • Fever (usually high) above 100 degrees Severe aches and pains in the joints and muscles and around the eyes Generalized weakness Sick appearance with warm, flushed skin and red, watery eyes Headache Dry cough Sore throat and watery discharge from your nose Treatment and Care

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