Wednesday, May 7, 2008

What vaccines and immunizations are available for the flu?

What vaccines and immunizations are available for the flu?

Vaccines and Immunizations Defined
Essentially, a vaccine forces a human body to create it's own protection for a disease. For a vaccine to work, a number of flu viruses are introduced to the body, and the intention is for the immune system to create it's own antibodies to fight the infection when needed.
Recognizing that flu strains will mutate each year, The WHO, (World Health Organization), in conjunction with The U.S. Department of Health, and Canadian Public Health Services, ascertain which flu viruses are most likely to be prominent for the upcoming year. Using this data, they decide which viruses and antigens to make available to the public at large. This method does require that a person receive a flu shot each year in order to maintain the most updated protection from flu viruses.

The Two Types of Immunizations
The most common form of vaccine is the flu shot. The shot, generally administered by a shot in the arm, utilizes three strains of dead influenza viruses. A flu shot can be given safely to a person six months or older. Two flu shots can be given to a child six months to nine years old and anyone nine and older only requires a flu shot once per year.

The other form of flu vaccine is the nasal spray form, aka, LAIV . This vaccine utilizes three weak, but live flu viruses. It is administered in the form of a nasal spray/mist . This form of vaccine is not considered safe for pregnant women, young children, or people older than 65 .

Precautions Before Getting Vaccinated
If you have existing medical conditions, there may be a risk in receiving a flu shot. As always, you should consult your doctor and ask their opinion.

What to tell your doctor.
It is advisable to tell your doctor if you have ever had any allergic reactions to food or drugs. If you have ever had a bad reaction to a flu shot in the past, then the shot may be a risk for you. Keep in mind that the viruses used in flu shots are generated from eggs. If you have an allergy to eggs, a flu shot may cause a reaction.

If you are pregnant, the spray vaccine LAIV is considered a risk. Women that are pregnant are typically advised to get the shot as an alternative.

You should discuss with your doctor your full medical history. Existing bronchial conditions like asthma, bronchitis, etc., should be taken into consideration. Complications can arise from these conditions and a full disclosure is advised, especially for elderly persons.
Additionally, you should inform your doctor of any other medications you are taking. Asprin therapy, cancer drugs, (alkylating, antimetabolite, immonosuppressive, and radiation therapy) all should be discussed with your doctor.
Please remember that the possibility exist that you may experience side effects from a flu vaccine. If this does happen, you should inform your Doctor immediately.

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