10. Are there different genotypes of the hepatitis B virus?
I want to highlight, for those of you who want
to keep up with the literature, there’s an evolution now of hepatitis
B virus genotypes. Let me just summarize to say that this is not
something we use in day-in day-out clinical practice. This is new information, this is evolving,
and we don’t have clear consensus on all the research yet. In the case
of hepatitis C, genotypes are critically important, they help us make
major decisions about therapy. But there are some interesting things that
are coming out here. There are now seven genotypes that are classified
by the letter of the alphabet. The way to remember it is that Northern
Americans, the Caucasian US population are A and D and the Asian US
population are B and C. These other ones are less common. One
association is the B genotype appears to be less active, more slowly
progressive than C, maybe because it has an earlier
9. What is e-antigen negative chronic hepatitis B?
11. What are the demographics of hepatitis B genotypes in the US?