Yes.
And your posts give the impression that you are trolling around because of your vague repeatative posts and meaningless post titles.
If your are really trying to learn about HepB, read the HepB Health page and visit hepb.org. It's a good place to start.
Please keep your posts on the original thread that your started.
Please confine your questions to one thread. They will not be missed...someone will answer them. When you start too many new threads it pushes down the questions of others.