World Hepatitis Day is July 28. Here is the site to the CDC:http://www.cdc.gov/features/worldhepatitisday/
which provides many other links to the various Heps, besides B.
If one person in 1million had an adverse reaction, it would be considered idiosyncratic. You need a high level of correlation (statistical significance, depending on test design) not to prove causation, but that there is a relationship between the vaccine and the side effect.
Causation is not proved in testing - there are other variables that cannot be ruled out.
I was going to blog about this - go figure!
The issue with Hep B is that it is preventable.
Just found this and I hope it helps:http://hepbunited.org/
THere is a lot of the information available on Hep B there...and the downside to not being tested for it.
Is there someone you know that had a rare side effect to a Hep B vaccine? If so, make sure that it is reported to the manufacturer and/or FDA for tracking purposes. That is essential for any FDA controlled product - whether the side effect is 1:mill or 1:10