Hepatitis viruses A, B, C, D and E can cause acute and chronic infection and inflammation of the liver that can lead to cirrhosis plus cancer. those infections cause a major global health risk with around 240 million people being chronically infected with hepatitis B and around 150 million people chronically infected with hepatitis C. World Hepatitis Day is an annual event that each year provides international focus for patient groups and people living with hepatitis, although the burden of disease caused by viral hepatitis still largely ignored or unknown to many policymakers, health workers and the public. WHO and partners mark World Hepatitis Day to increase the awareness and understanding of viral hepatitis and the diseases that it causes every year on 28 July. For 2013, the overall theme continues to be:
“This is hepatitis…Know it…Confront it”
The celebration day was choose same Birthday of Professor Baruch Samuel Blumberg , who discovered HBV .