Is it true that if you are over 18 must sign up with CDC your H1N1 vaccination medical profile information?

No, individuals over 18 years of age are not required to sign up with the Centers for Disease Control and Prevention (CDC) for their H1N1 vaccination medical profile information. The CDC offers a database called the Vaccine Adverse Event Reporting System (VAERS) where people can voluntarily report any adverse events that they experience after receiving a vaccination. However, enrollment or signup with VAERS is not mandatory.