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The trivalent seasonal flu vaccine protects against the three strains of the flu that are expected to be causing infections in that flu season. The three flu viruses selected usually change each year. The vaccines don't protect against all strains, so it's not a guarantee, but is recommended for all people (except infants under six months, those with Allergies, etc.- see list of those who should not get a flu vaccination in the related questions below). It is especially recommended that children, older adults, and people with chronic medical conditions get vaccinated every year before flu season. There is a new vaccine in the 2012-2013 flu season that is quadravalent, i.e., it has protection against four strains of the flu (FluMist Quadravalent).

There are formulations of these vaccines for administration three different ways: The standard IM (intramuscular) flu shot/jab, a new (in 2011) vaccine for ID (intradermal) administration (in the layers of the skin), and the two nasal sprays. The IM and ID shots contain killed virus and are safe for use by most people (see exceptions in related question below).

The nasal spray is made with live, weakened virus, and is, therefore, recommended only for those aged 2-49 years who are not pregnant. The people with suppressed immune systems are also usually advised to use only vaccines made with inactive "dead" viruses.
For the 2012-2013 flu season in the US, this year's trivalent seasonal flu vaccines will protect against the following three strains of influenza:

  • Type A/California/7/2009 (H1N1) ~ the "swine flu vaccine",
  • Type A/Victoria/361/2011 (H3N2), and
There is also a new vaccine in the 2012-2013 flu season that is FluMist Quadrivalent. This new vaccine includes two Type B strains of flu instead of one. It contains B strains from both the B/Yamagata/16/88 and the B/Victoria/2/87 lineages in addition to the same strains of the Type A viruses (H1N1 and H3N2) that are included in the trivalent vaccines for this season. See the related questions below for more info.

For the 2012-2013 Flu season in the US, the following vaccines for influenza are approved for use:
  • AFLURIA Trivalent made by CSL/Merck

  • AGRIFLU made by Novartis

  • FLUARIX Trivalent made by GlaxoSmithKline Biologicals

  • FLUMIST made by MedImmune Vaccines, Inc.

  • FLUMIST QUADRAVALENT made by MedImmune Vaccines, Inc.

  • FLULAVAL Trivalent made by ID Biomedical Corporation of Quebec
  • FLUVIRIN Trivalent made by Novartis

  • FLUZONE made by Sanofi Pasteur, Inc.

  • FLUZONE - High Dose made by Sanofi Pasteur, Inc.

  • FLUZONE-Intradermal made by Sanofi Pasteur, Inc.


For more information see the related link. Also see the related questions below for even more.
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11y ago
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11y ago

For the 2012-2013 flu season in the US:

This year's trivalent seasonal flu vaccines will protect against the following three strains of influenza:

  • Type A/California/7/2009 (H1N1) ~ the "Swine Flu vaccine",
  • Type A/Victoria/361/2011 (H3N2), and
  • Type B/Wisconsin/1/2010.

There is also a new vaccine in the 2012-2013 flu season that is named FluMist Quadrivalent. This new vaccine includes two Type B strains of flu instead of one. It contains B strains from both the B/Yamagata/16/88 and the B/Victoria/2/87 lineages in addition to the same strains of the Type A viruses (H1N1 and H3N2) that are included in the trivalent vaccines for this season. See the related questions below for more info.

For the 2012-2013 Flu season in the US, the following vaccines for influenza are approved for use:
  • AFLURIA Trivalent made by CSL/Merck

  • AGRIFLU made by Novartis

  • FLUARIX Trivalent made by GlaxoSmithKline Biologicals

  • FLUMIST made by MedImmune Vaccines, Inc.

  • FLUMIST QUADRAVALENT made by MedImmune Vaccines, Inc.

  • FLULAVAL Trivalent made by ID Biomedical Corporation of Quebec
  • FLUVIRIN Trivalent made by Novartis

  • FLUZONE made by Sanofi Pasteur, Inc.

  • FLUZONE - High Dose made by Sanofi Pasteur, Inc.

  • FLUZONE-Intradermal made by Sanofi Pasteur, Inc.
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12y ago

Influenza vaccines are used for the seasonal flu and for swine flu (H1N1/09). There is no vaccine commercially available for the Bird (Avian) Flu. See the related questions for more details.

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Q: What vaccines are used for the flu?
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Vaccines against the flu are different every year why is this?

The most prevelent strains of the flu are used to develop the vaccines. These may not be the same strains as the year before. Also, the flu symptoms change due to the atmosphere and climate.


Why are vaccines used to kill bacteria?

Vaccines are used to make your body produce antibodiesand T-cells against viruses or bacteria! The Measles and Flu vaccines are viral. The Whooping Cough (Pertussis) and Tuberculosis vaccines are bacterial.


Is there safe flu medicines that isn't a dope?

The only medical treatments available are used to relieve the symptoms of flu, NOT to cure the disease - you cannot cure flu. Flu vaccine, like all vaccines is a prophylactic - it stops you getting flu. All vaccines of all types are based on the virus they are used against or some very closely related virus that the body regards as identical - some vaccines are dead, some are weakened (attenuated) so that they do not cause disease.


As of 2007 is thimerosal in any vaccines in the US?

From the Centers for Disease Control and Prevention (CDC): Since 2001, with the exception of some influenza (flu) vaccines, thimerosal is not used as a preservative in routinely recommended childhood vaccines.


What medicine kills Swine Flu?

There are some vaccines,but there are no such medicines that kills swine flu.


What is the best way to ship the following products Explain your answer Flu vaccine?

The best way to ship flu vaccines is by a company such as FedEx. FedEx would be the best way to ensure the flu vaccines get to where they are going.


Can vaccines work on viruses?

Yes, a large percentage of vaccines are for viral infections, there are not many vaccines for bacterial infections but there are a few. The flu is caused by a virus, vaccinations against the flu work very well, for example.


Who can administer flu vaccines?

The answer varies by state law.


When did the flu become a injection?

What you are talking about is a vaccine that is given by injection so you will not get the flu. The flu mutate all the time so you will need to get vaccines for each new strain. The first vaccine was used in 1940 during WWII.


Why are vaccines for Swine Flu not available?

They are available now. In fact, in the 2010-2011 flu season in the Northern Hemisphere, the regular seasonal flu vaccination includes the vaccine for H1N1/09 (swine flu). If you already had the vaccine in the 2009-2010 season, it will not harm you and might help you to get it again along with the vaccines for the other flu viruses expected in this flu season.


Will there be enough swine flu vaccines for everyone?

apparently we dont know


Is there anything that fights off the flu besides flu shots?

There is a drug called Tamiflu that is an anti-viral drug that is used to help your immune system fight the flu. Flu vaccinations prevent the flu but they do not fight the flu if you already have it. The vaccines can be administered either by injection as a flu shot or can be given by intra-nasal route with a nasal spray preparation.