what strains are in the flu vaccine
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Flu Shot Facts & Side Effects (Updated for 2017-2018) The composition of the 2017-2018 flu shot will be slightly different from last season's flu shot. 1  Specifically, there will be a different strain of the H1N1 virus in this season's flu shot, compared with last season's shot. According to the CDC, the 2017-2018 trivalent flu shot will contain the following strains of the flu virus: 1  A/Michigan/45/2015 (H1N1)pdm09-like virus – This is the H1N1 component that is different from last year's flu shot. 2  A/Hong Kong/4801/2014 (H3N2)-like virus – This is the H3N2 component that is the same as last year's flu shot.
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New Vaccine Designed for a Deadly Flu Strain Of the three, health officials are most concerned about California A, which is a strain belonging to a family of Influenza A H3N2. It is believed to be among the most deadly of all flu strains. A slightly different strain of H3N2 -- not included in the current 2004 vaccine -- was blamed for the deadly disease outbreak that swept through Colorado and other western states earlier this year.
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Pneumococcal conjugate vaccine Prevnar (PCV7) is a heptavalent vaccine, meaning that it contains the cell capsule sugars of seven serotypes of the bacteria S. pneumoniae (4, 6B, 9V, 14, 18C, 19F and 23F), conjugated with diphtheria proteins.
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Which Flu Vaccine Should You Get? Vaccine brands: Afluria, Fluarix, FluLaval, Fluvirin, Fluzone Standard dose intramuscular trivalent grown in cell culture (inactivated vaccine) Approved for use in adults 18 years and older.
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- Subtypes of bird flu. There are different subtypes and strains of the virus that causes bird flu, and some cause more severe disease than others. The subtypes of the virus that have caused recent concern include: 1  influenza A (H5N1) virus (or simply H5N1 virus); and, more recently, 2  influenza A (H7N9) virus.uman infections with bird flu are not common, but it is possible for people to catch bird flu from infected poultry or surfaces contaminated with droppings, saliva or feathers from infected birds. Human cases of bird flu generally coincide with outbreaks in poultry.
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Flu guide Swine flu is one of several strains of flu which are now considered to be seasonal flu. The official name for swine flu is Influenza A virus subtype H1N1. This strain of flu, like other strains, can be serious for some people in at-risk groups.
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Key Facts About Seasonal Flu Vaccine Influenza (Flu) Note: For the 2016-2017 season, CDC recommends use of the flu shot (inactivated influenza vaccine or IIV) and the recombinant influenza vaccine (RIV). The nasal spray flu vaccine (live attenuated influenza vaccine or LAIV) should not be used during 2016-2017. The 2016-2017 influenza vaccination recommendations are now available.
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What is the flu vaccine? The vaccine is only effective against the strains of the virus that match the vaccine. These strains vary from flu season to flu season each year. This is the reason that revaccination is required annually with the vaccine that matches the strains of influenza that are currently prevalent.he vaccine is termed an attenuated vaccine because the viruses are weakened so that they do not cause severe flu symptoms. The nasal spray flu vaccine (LAIV) has been approved by the FDA for use in nonpregnant healthy people between two and 49 years of age.
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Influenza In the case of a pandemic, an additional vaccine may be created to protect against a particularly virulent or widespread strain of influenza. The need for a 2009 H1N1 influenza vaccine became apparent after the strains for the seasonal flu vaccine had already been selected, so that a separate vaccine was created. A quadrivalent inactivated influenza vaccine was licensed in the United States in 2012, and a quadrivalent live virus nasal spray vaccine was licensed in 2013. These formulations include two influenza B strains in addition to the A strains. This vaccines began to be available, along with trivalent vaccines, in the 2013-14 influenza season.
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The Flu And The Vaccine The most common flu vaccine is the inactivated influenza vaccine which is prepared from the fluids of chick embryos inoculated with a specific type(s) of influenza virus. The strains of flu virus in the vaccine are inactivated with formaldehyde and preserved with Thimerosal, which is a mercury derivative.
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Fluzone Fluzone ® (influenza) Suspension for Intramuscular Injection. DESCRIPTION. Fluzone High-Dose (Influenza Vaccine) for intramuscular injection is an inactivated influenza vaccine, prepared from influenza viruses propagated in embryonated chicken eggs. The virus-containing allantoic fluid is harvested and inactivated with formaldehyde.
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Fluzone Fluzone ® High-Dose is a vaccine indicated for active immunization for the prevention of influenza disease caused by influenza A subtype viruses and type B virus contained in the vaccine. Fluzone High-Dose is approved for use in persons 65 years of age and older.
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Bird Flu (Avian Influenza) Bird flu is caused by strains of the influenza virus that have evolved to be specially adapted to enter avian cells. There are three main types of influenza: A, B, and C. The virus that causes bird flu is influenza A type with eight RNA strands that make up its genome. Influenza viruses are further classified by analyzing two proteins on the surface of the virus. The proteins are called hemagglutinin (H) and neuraminidase (N).
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A Look at Each Vaccine: Influenza Vaccine All of the vaccines listed below contain either three or four of the influenza strains circulating in the community during a particular year. One influenza vaccine is made by growing influenza viruses in hen's eggs, purifying it, and completely killing it with a chemical (formaldehyde).
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- Based on their predictions, the flu vaccine is formulated to protect against those three or four strains. When the experts have made a good match, the vaccine is up to 90% effective in healthy adults. For those age 65 and older, a high-dose version of the flu vaccine called Fluzone is recommended when available.
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Flu Vaccine Note: For the 2016-17 season, CDC recommends use of the flu shot (inactivated influenza vaccine or IIV) and the recombinant influenza vaccine (RIV). The nasal spray flu vaccine (live attenuated influenza vaccine or LAIV) should not be used during 2016-17.
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Ice Cream in a Bag! Ice must absorb energy in order to melt (melting is an endothermic process *), so heat is transferred from the environment (which includes your ice cream mixture!) to the ice, making the ice cream mixture colder.
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The swine flu: Can the flu vaccine protect you? I said above that none of the strains in this year's vaccine corresponds with the swine flu. But some highly knowledgeable and observant readers may know that this year's vaccine contains an H1N1 strain and that this new swine flu is also H1N1.
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Background Check: Why Was Carly Fiorina Fired FromHP? Republican presidential candidate Carly Fiorina defended her record as chairman and CEO of Hewlett-Packard Sunday on NBC's Meet the Press..
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Flu vaccine is 48% effective this season, CDC says The predominant virus strain this season is influenza A (H3N2) strain; the estimated effectiveness of the vaccine in preventing illness caused by that strain was 43%. The vaccine's estimated effectiveness against the influenza B virus was 73%. That amounts to overall protection of 48%, the CDC said.
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Understanding the 3 Different Types of Flu There are three types of flu viruses that cause seasonal influenza: A, B, and C. Influenza A. Type A influenza is usually responsible for the majority of seasonal flu cases. It is found in humans and in animals. Influenza A is spread from person to person by people who are already infected.
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WILL THE CURRENT FLU VACCINE COVER TYPE B FLU? The trivalent vaccine (three different flu viruses) includes the most common Type B flu strain that is currently circulating, but the vaccine is only... My WebMD Sign In, Sign Up My WebMD Sign In
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6 Flu Season Facts You Probably Don't Know However, upon deeper analysis by the CDC of the 2015-2016 influenza season, FluMist's quadrivalent vaccine was only shown to have a VE of 46% compared to the flu shot's VE of 65%. Even more damning, FluMist had a VE of 0% against one of the identified strains of flu to affect people last year.
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- In 2012-2013, H3N2 was the dominant flu strain. It tended to cause serious illness and deaths in older people. With H1N1 the main strain this year, we fully expect to see many more cases in younger children and middle-aged adults, Osterholm said.
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Why does immunity from the flu vaccine appear only after two weeks? Here's how the flu vaccine works: Scientists forecast months in advance which strains they think stand to cause the most problems. The vaccine is often trivalent, protecting against three different strains on flu: Two influenza A and one influenza B. You can read about the process directly from the CDC.
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- Influenza vaccine (flu shot) facts. 1  Types of influenza (flu) vaccines include the injection (killed virus) and nasal spray vaccines (containing live but weakened virus). 2  Each year, influenza viruses change slightly, making the vaccine used in previous years ineffective.