World Hepatitis Day is recognized annually on July 28th, the birthday of Dr. Baruch Blumberg (1925–2011). Dr. Blumberg discovered the hepatitis B virus in 1967, and 2 years later he developed the first hepatitis B vaccine. These achievements culminated in Dr. Blumberg winning the Nobel Prize. Organizations around the world, including WHO and CDC, commemorate World Hepatitis Day to raise awareness of the problem of viral hepatitis, which impacts more than 325 million people worldwide. It creates an opportunity to educate people about the burden of these infections, CDC’s efforts to combat viral hepatitis around the world, and actions people can take to prevent these infections.