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. Additionally, flu vaccines have been found to elicit inflammatory reactions that may harm the human heart, the developing fetus, and the fragile immune systems of our infants. So, do the theoretical benefits really outweigh the known harms?
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.
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