Definition and description of Flu: Flu is referred to as Influenza in medical terminology. Flu is a highly contagious and acute respiratory tract infection that normally occurs in winter season. Generally, flu appears in form of epidemic. Though flu can affect people of all ages, children are affected more. Immuno-suppressed people, young children and people with chronic diseases experience the high severity of flu.

Pneumonia (viral pneumonia or bacterial infection) is most common complication produced by flu. Other complications include chronic obstructive pulmonary disease, myositis, myocarditis, Reye’s syndrome, encephalitis and pericarditis.

Causes of Flu: Flu is resulted from various strains of influenza virus. These viruses can mutate into various forms. You can get infected with flu by inhaling respiratory droplet from a person infected with flu or through indirect contact like using contaminated glass.

Sings and Symptoms of Flu: The main symptoms of flu include weakness, muscle aches, fatigue, fever, headaches and sneezing. Runny nose may be observed in some cases. Usually, symptoms of flu are mild in nature and do not lead to any serious health complications. However if you experience one of the following condition you must consult your health care provider.

Prevention of Flu: You may get protected from flu though immunization. There are certain vaccinations available for prevention of flu. There are certain side effects like appearance of mild flu like symptoms, inflammation at the injection site etc attached to the influenza vaccine. People with weak resistance must avoid crowded places like shopping centers, markets, theaters etc, especially during onset of flu epidemic.

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