The Hepatitis B vaccine is a safe and effective immunization that protects against the Hepatitis B virus, which can cause serious liver disease. The vaccine is typically given in a series of three or four shots, starting at birth or during early childhood. It helps the body develop immunity to the virus, reducing the risk of infection and its potential complications. Receiving the Hepatitis B vaccine is important for everyone, especially for those at higher risk, such as healthcare workers and individuals with multiple sexual partners. The vaccine is widely recommended by health organizations, including the World Health Organization and the Centers for Disease Control and Prevention, to help control the spread of this virus globally.