Flu Shot

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zerobladex
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Flu Shot

Post by zerobladex » Tue Oct 14, 2008 4:31 am

Why is it that after someone gets the flu shot, its still possible for them to come down with the flu?
Is it because the flu virus mutates and the vaccine becomes ineffective against them, or is are there other reasons along with this one?

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mith
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Post by mith » Tue Oct 14, 2008 5:10 am

it's effective for ~1 year and against common strains only.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

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biohazard
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Post by biohazard » Tue Oct 14, 2008 6:07 am

Also, it's often difficult to distinguish "common flu" from influenza - the flu shot only protects from (the common strains of) the latter, and offers no protection against any other type of respiratory viral disease, of which some may closely resemble influenza, although usually with milder symptoms.

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