My spouse immigrated to Australia, and I am a hepatitis B virus carrier. Does it matter?

It has no effect at all. But you need to provide a very detailed medical report. Maybe you need to do more blood tests. It is estimated that you should also do a B-ultrasound to prove that your liver function is fine and not contagious. Well, you tell the medical examiner truthfully, and they will do the corresponding examination for you and then submit it. LZ, don't worry

As for where to get married, whether to get married first or later, this has nothing to do with immigration.

What the Immigration Bureau values is whether you have a cohabitation relationship and whether the time spent together meets the requirements of spouse immigration (I don't know the time limit, it seems to be one year. They don't pay much attention to whether you have a marriage certificate. You need to provide a lot of information, such as address and letter, or email, joint account (if any), etc. , and consult a specialized immigration agency or immigration bureau for details.

By the way, I want to ask you, is it true that your employment in China is not affected now? How did you see that?