what causes influenza disease
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Top 10 Causes of Death in Men Influenza (also known as the flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year.
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Information for Schools The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. The flu is worse than the common cold, and symptoms such as fever, body aches, extreme tiredness and dry cough are more common and intense. 2  People with colds are more likely to have a runny or stuffy nose.
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Influenza Influenza, commonly known as the flu , is an infectious disease caused by the influenza virus. Symptoms can be mild to severe. The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week. The cough, however, may last for more than two weeks.
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Donât Be a Shot Dodger! The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications.
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Influenza A virus The Influenza A virus subtypes that have been confirmed in humans, ordered by the number of known human pandemic deaths, are: H1N1 caused Spanish Flu and the 2009 swine flu outbreak (novel H1N1) H2N2 caused Asian Flu. H3N2 caused Hong Kong Flu. H5N1 is bird flu, endemic in avians.
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Flu (Influenza) The flu (influenza) is a contagious respiratory disease caused by flu viruses. It is spread from person to person by coughing or sneezing. It can also be spread by touching contaminated surfaces. Symptoms of flu include fever* or feeling feverish/chills, cough, sore throat, runny or stuffy nose, muscle or body aches, headache, and tiredness.
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- Most cases of the flu, especially those that occur in epidemics or pandemics, are caused by the influenza A virus, which can affect a variety of animal species, but the B virus, which normally is only found in humans, is responsible for many localized outbreaks.
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Influenza INFECTIOUS AGENT. Influenza is caused by infection of the respiratory tract with influenza viruses, which are classified into 3 types: A, B, and C. Only virus types A and B commonly cause illness in humans. Influenza A viruses are further classified into subtypes based on 2 surface proteins, hemagglutinin (H) and neuraminidase (N).
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Influenza (Seasonal Flu) - Cause The flu is caused by the influenza virus. Doctors classify the virus as influenza type A and type B, each of which includes several subtypes or strains.Type A is usually responsible for the annual outbreaks that typically occur in the late fall and early winter.he flu is caused by the influenza virus. Doctors classify the virus as influenza type A and type B, each of which includes several subtypes or strains.
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Flu (Influenza) | Causes, Symptoms and Remedies Flu, or influenza, is a viral illness that occurs predominantly in the winter months. It is easily confused with the common cold, which is caused by a different virus. Influenza viruses can infect the nose, throat, sinuses, upper airways and lungs.Flu spreads easily from person to person, through droplet distribution when an infected person coughs or sneezes or, quite commonly, by hand-to-hand contact.t is easily confused with the common cold, which is caused by a different virus. Influenza viruses can infect the nose, throat, sinuses, upper airways and lungs. Flu spreads easily from person to person, through droplet distribution when an infected person coughs or sneezes or, quite commonly, by hand-to-hand contact.
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- Influenza, or flu, is a respiratory infection caused by any of several flu viruses, which are classified as type A, B, or C based on their nucleic acids and protein composition.
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What type of mirco organism causes the flu? The flu (influenza), is caused by influenza viruses. There are three types of influenza viruses, designated Type A, B, and C. Types A and B are common types of seasonal flu in humans, while C is less frequent in humans.
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Upper Respiratory Infection Versus Lower: Whatâs the Difference? Seasonal influenza, commonly called “the flu,” is caused by influenza viruses, which infect the respiratory tract (i.e., the nose, throat, lungs). Unlike many other viral respiratory infections, such as the common cold, the flu can cause severe illness and life-threatening complications in many people.hildren may pass the virus for longer than 7 days. Symptoms start 1 to 4 days after the virus enters the body. Information about how long a person is contagious is available at How Flu Spreads.
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- Causes. Influenza is caused by viruses that are spread through the air by sneezes and coughs, or by touching a surface a person with the flu has touched and transmitting the virus to your mouth or nose. Some flu viruses cause a very mild illness, or none at all. Others cause serious, widespread illness.
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- Type A influenza virus is the most virulent form of influenza and the one that causes the most severe illness. This virus often originates in populations of wild birds, poultry, or swine (including pigs and hogs), so different strains are sometimes referred to as avian (bird) or swine flu.
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influenza influenza or flu, acute, highly contagious disease caused by a virus; formerly known as the grippe. There are three types of the virus, designated A, B, and C, but only types A and B cause more serious contagious infections.pidemics of influenza may be caused by type A or B strains, although type B is more likely to occur sporadically. Pandemics (worldwide epidemics) are caused only by type A. Three such pandemics occurred in the 20th cent., in 1918–19 (the Spanish flu), 1957–58 (the Asian flu), and 1968–69 (the Hong Kong flu).
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What Causes the Flu? A good start is to know what causes it. This illness is different from a cold. While more than 100 different viruses can cause a cold, only influenza virus types A, B, and C cause the flu. good start is to know what causes it. This illness is different from a cold. While more than 100 different viruses can cause a cold, only influenza virus types A, B, and C cause the flu.
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Writing Learning Objectives These programs have a heavy emphasis on what needs to be taught with little regard to what participants will need to be able to do when they get back to their job. A focus on writing effective learning objectives tied to real organizational needs is what is missed in a lot of cases.
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FAQs: H5N1 influenza FAQs: H5N1 influenza. H5N1 is a type of influenza virus that causes a highly infectious, severe respiratory disease in birds called avian influenza (or bird flu).5N1 infection in humans can cause severe disease and has a high mortality rate. If the H5N1 virus were to change and become easily transmissible from person to person while retaining its capacity to cause severe disease, the consequences for public health could be very serious.
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What causes influenza? Influenza is caused by a virus infecting the body. The family of RNA viruses that causes influenza in humans is named Orthomyxoviridae. Flu most often spreads when someone with the flu touches items or people with their unwashed hands. It also is frequently spread through uncovered coughs or sneezes.
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Donât Be a Shot Dodger! Influenza (the flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications.
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Donât Be a Shot Dodger! The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications.he flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications.
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- Actually, the flu is the disease (influenza) and the microbes are what cause the disease, not the other way around.nswer by D4est. Confidence votes 40.4K. Actually, the flu is the disease (influenza) and the microbes are what cause the disease, not the other way around. The pathogens (microbes) responsible for the infectious disease called influenza are viruses.
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Influenza Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus.[1] Symptoms can be mild to severe.[4] The most common symptoms include: a high fever, runny nose, sore throat, muscle pains, headache, coughing, and feeling tired. These symptoms typically begin two days after exposure to the virus and most last less than a week. The cough, however, may last for more than two weeks.
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Information for Schools The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. CDC estimates that flu-related hospitalizations since 2010 ranged from 140,000 to 710,000, while flu-related deaths are estimated to have ranged from 12,000 to 56,000.
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Influenza in children Influenza in children. Influenza (or “flu”) is a respiratory infection caused by influenza virus. Influenza outbreaks happen every year, usually between November and April. Because influenza viruses change – often from year to year – people don’t stay immune for very long.