Right - they point out the pathway. It does sound like you might have hepatitis already, so the vaccine is just in injury pathway. Or you might have some other

Right - they point out the pathway. It does sound like you might have hepatitis already, so the vaccine is just in injury pathway. Or you might have some other (small) issue and immune response makes it a big one. I find this a bit plausible because the vaccine is designed to trigger an immune response (generally).