Quote:
Originally Posted by rubicon
It is possible that because of the improper mix of one batch, or perhaps because of the immune system of a person is compromised that flu shots can have bad effects for one person and not another.
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Having been in the vaccine business, I can tell you that if there was an improper mix of one batch, it would be grounds for recall.
If enough adverse events are reported to the FDA, they will require an investigation and possible market action (recall) if warranted.
I had my shot yesterday (first one in about 20 years, because my doctor insisted on it) and felt no effects today. It was however, not the high dose...as I have not hit that magic age yet.
BTW, the flu strains to be cultivated for vaccines are decided in January by the CDC/FDA, 9 months before the season starts, so that the manufacturers will have enough time to fully culture and gear up for mass production. Unfortunately, it is a well-educated and professional guess for the strains, and the typical clinical trials may not be performed....and the process is a little more complex than what you saw with Dustin Hoffman in "Contagion"