Signs and symptoms of influenza

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Flu Symptoms & Complications

signs and symptoms of influenza

Uncomplicated influenza illness is typically characterized by the abrupt onset of constitutional and upper respiratory tract signs and symptoms (e.g., fever, chills.

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Influenza also known as the flu is a contagious viral infection that attacks your respiratory system. Influenza viruses that infect humans can be classified into three main groups: A, B, and C. Type A influenza infection can be serious and cause widespread outbreaks and disease. Common symptoms of type A infection can be confused with other conditions. While in some milder cases the flu can resolve on its own without significant symptoms, severe cases of type A influenza can be life-threatening.

Uncomplicated influenza. Uncomplicated influenza illness is typically characterized by the abrupt onset of constitutional and upper respiratory tract signs and symptoms e. However, many people who are sick with influenza virus infection do not manifest fever, especially those who are elderly or immunosuppressed. Atypical signs and symptoms of influenza virus infection can occur, including in frail, institutionalized elderly long-term care facility residents. Among young children with influenza, nausea, vomiting or diarrhea may also occur with respiratory symptoms. Influenza virus infection of the respiratory tract can cause a wide range of complications that can result in severe disease.

Flu is different from a cold. People who are sick with flu often feel some or all of these symptoms:. Most people who get flu will recover in a few days to less than two weeks, but some people will develop complications such as pneumonia as a result of flu, some of which can be life-threatening and result in death. Sinus and ear infections are examples of moderate complications from flu, while pneumonia is a serious flu complication that can result from either influenza virus infection alone or from co-infection of flu virus and bacteria. Other possible serious complications triggered by flu can include inflammation of the heart myocarditis , brain encephalitis or muscle myositis, rhabdomyolysis tissues, and multi-organ failure for example, respiratory and kidney failure. Flu also can make chronic medical problems worse.

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The Flu (Influenza): Causes, Symptoms & Treatment

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3 thoughts on “Signs and symptoms of influenza

  1. Influenza is a viral infection that attacks your respiratory system your nose, throat and Common signs and symptoms of the flu include.

  2. Victorian government portal for older people, with information about government and community services and programs.

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