you cant get hbv that way, even sharing same sandwich is difficult
if you get hbv as an adult you ll clear it by immune system anyway, only 2.8% of adults get chronic
From my understanding, you normally can't get it this way but if you have Hep B and suspect you contracted it to a relative, I've read it can be stopped as long as the vaccination is started within the first 24-48 hours (anyone can correct me if I am wrong on this though)
And my chopsticks touched with the food he ate.