Still we don't know how this disease spreading even though without doing wrong habits....like improper sex and drugs.... And lot of them saying it will be acute and 95% adults spontaneously cleared the virus with their own immune system... I discussed lot of people in our country, they are also unaware and don't know how they were infected by the virus like as me....
From CDC(Centers for Disease Control and Prevention)
http://www.cdc.gov/hepatitis/hbv/bfaq.htm:
What are ways Hepatitis B is not spread?
Hepatitis B virus is not spread by sharing eating utensils, breastfeeding, hugging, kissing, holding hands, coughing, or sneezing.