Hepatitis B is a liver disease that can cause inflammation of the liver and swelling of liver cells. Hepatitis B can lead to cirrhosis of the liver and, as a result, can stop it from working properly. The liver is needed to fight infections and stop bleeding. It also removes drugs and other poisons from the blood. Causes Hepatitis B is caused by a virus.
People can pass viruses to each other.
The virus that causes hepatitis B is called the hepatitis B virus. You can be protected from this virus by receiving a hepatitis B vaccination or by avoiding behaviors that put you at risk for contracting the virus. Transmission Of Hepatitis B Hepatitis B spreads by contact with an infected person's blood, semen, or other body fluid. Having sex with an infected person without using a condom. Sharing drug needles.