Hepatitis B is an infectious disease. I don't buy the connection with Agent Orange. For the record I had heavy Agent Orange exposure.
Check with your friend you recieved benifits for Hep B. I think it is Hep C, that the benifits award was given. And it was from contaminated shots while in Military. I could be wrong you need to check with a Veterans Service Officier.
I also believe it was Hep C and not Hep B. My father was exposed to Hep C in the military and was awarded. He was also recognized in Agent Orange AFTER death from the effects.........Agent Orange and Hep B are not related.....as far as I know....Agent Orange is chemical....