The Centers for Disease Control has been quietly rolling out a nationwide program called the Immunization Information Systems (IIS), registering your vaccine information into a database.  This effort has been run in parallel with state vaccine registry implementations.
Flu vaccines, according to the best scientific evidence available today, will only work against 10% of the circulating viruses that cause the symptoms of seasonal epidemic influenza. So, do the theoretical benefits really outweigh the known harms?
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