The test for Hepatitis infection is not hbvdna, it is whether HBsAg is positive or negative. To get a good picture, the complete serology test such as HBsAg, HBsAb, HBeAg, HBeAb, and HBcAb should be carried out.
Many chronic Hepatitis B patients have hbvdna < 20 iu/ml.
Okay.
How about my husband is safe from HBV, he didnt contacted from me, because he was vaccinated?
Vaccination itself is not sufficient. One must also be a responder to the vaccination, that is, after vaccination, he must show a level of HBsAb > 10miu/ml.