Hepatitis B is a highly contagious disease caused by the virus of the same name, also known as HBV, which is transmitted through blood or through bodily fluids (semen, vaginal secretion, saliva), as occurs with the promiscuous use of infected syringes, razors and toothbrushes or during sexual contact. It is precisely unprotected intercourse that is the primary cause of hepatitis B infection, which peaks significantly at a young age, a time when sexual promiscuity is highest.
