is flu viral or bacterial?
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Illnesses like influenza, or “the flu,” and upper respiratory infections (URIs) fall under the category of viral infections, while illnesses such as pneumonia, sinusitis and ear infections are considered bacterial infections.
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Is It Contagious? Because it is caused by infectious microbes, viral pneumonia is contagious. However, this lung infection is considered less contagious than the flu. Your risk rises if you smoke or have certain underlying medical conditions such as heart disease or diabetes.
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Viral and bacterial infections Bronchitis is usually caused by a virus. Less often, it's caused by a bacteria. In most cases, bronchitis is caused by the same viruses that cause the common cold or flu.
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Knowing the difference can save you time and money during cold and flu season. The symptoms of a bacterial infection and a virus are often very similar—fever, muscle aches, cough, and sore throat—but they require different treatments.
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H. influenzae most often cause pneumonia, but can also cause severe illnesses like meningitis and bloodstream infections. Haemophilus influenzae, a type of bacteria, can cause many different kinds of infections.
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While influenza B viruses are typically less common than influenza A viruses, influenza B infections can be more severe in children, and can lead to complications that require hospitalization or death.
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Influenza (Flu) and COVID-19 are both contagious respiratory illnesses, but they are caused by different viruses. COVID-19 is caused by infection with a new coronavirus (called SARS-CoV-2) and flu is caused by infection with influenza viruses.
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What Are the Different Types of Flu? There are three types of flu viruses: A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high fevers. Type C also causes flu; however, type C flu symptoms are much less severe.
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However, the flu virus mutates very quickly and the vaccine does not provide protection against all strains. Bronchitis is the inflammation of the airways leading to the lungs. Bronchitis often develops from the common cold.
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Examples of bacterial infections include whooping cough, strep throat, ear infection and urinary tract infection (UTI). Viral infections include the common cold, flu, most coughs and bronchitis, chickenpox and HIV/AIDS.
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Fact: Influenza vaccines do not protect against the viruses or bacteria that cause colds or stomach illnesses, often called the stomach flu. The influenza virus is very different and typically causes more severe illness than the common cold or the stomach flu.
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Viruses that cause the common cold and the flu also cause most sore throats. Less often, bacterial infections cause sore throats.
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Respiratory causes of fever include infection with both viral and bacterial pathogens. Viral diseases at play could be equine influenza, equine herpesvirus (EHV-1 and -4), equine viral arteritis, and equine rhinitis.
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There are four types of influenza viruses: A, B, C and D. Human influenza A and B viruses cause seasonal epidemics of disease (known as the flu season) almost every winter in the United States.
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Viral and bacterial pneumonia symptoms are quite similar If you have pneumonia—either bacterial or viral—you'll typically have a cough that brings up sputum, fever, shortness of breath, and chest pain when you cough or take a deep breath, says Kimberly Brown, MD, MPH, an emergency medicine doctor in Memphis, Tennessee.
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The most common type of viral disease is the common cold, which is caused by a viral infection of the upper respiratory tract (nose and throat). Other common viral diseases include: Chickenpox. Flu (influenza)
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Pharyngitis is most commonly caused by viral infections such as the common cold, influenza, or mononucleosis. Viral infections don't respond to antibiotics, and treatment is only necessary to help relieve symptoms. Less commonly, pharyngitis is caused by a bacterial infection. Bacterial infections require antibiotics.