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In the US, through special provisions made by the US Food and Drug Administration, a fast track for approval was implemented to speed the regulatory process. The vaccines were made with all the same ingredients as the seasonal flu shots had used for decades and had proven safe and effective, so extensive trials were not required, although some trials in animals and humans were still performed.

The CDC (Centers for Disease Control and Prevention) spearheaded the search for the best virus particles to use to create the vaccine and once that was selected, they also cultured the viruses to provide seed stock to the manufacturers to grow virus to make the vaccines as quickly as possible.

It was a surprisingly quick process from start to finish and went faster than was initially anticipated. The work began in Spring 2009 and by the beginning of the Northern Hemisphere flu season that same fall, the vaccine was already being made available to those at highest risk. Before the flu season was over, millions of doses of the vaccine had been created and used.

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12y ago
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15y ago

6 months once the strain is isolated.

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Q: How long did it take doctors to find vaccine for swine flu?
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Can a non custodial parent take her children to have the swine flu vaccine?

yes, as long as it is discussed and permission obtained from the person who has custody of the child.


Should you get the flu shot first or the Swine Flu shot?

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How long does immunization against Swine Flu last I was inoculated last year does it cover this year also?

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