Chronic hepatitis B is a long-term infection caused by the hepatitis B virus (HBV), which attacks the liver. Unlike acute hepatitis B, which lasts for a short time, chronic hepatitis B can persist for years or even a lifetime. This condition can lead to serious liver problems, including cirrhosis and liver cancer. Many people with chronic hepatitis B may not show symptoms, making it difficult to detect without testing. The virus spreads through contact with infected bodily fluids, such as blood or during childbirth. Regular monitoring and treatment can help manage the infection and reduce the risk of complications.