What are the causes of hepatitis B?

Hepatitis B is a disease caused by hepatitis B virus infection. The common transmission routes are blood, mother-to-child, sexual life transmission, of which sexual life and blood transmission are the most common. Because pregnant women in pregnancy, need to carry out related prevention and treatment, and newborns within 24 hours after birth to vaccinate hepatitis B vaccine, so there has been less mother-to-child transmission of hepatitis B virus phenomenon.