A型肝炎
World Hepatitis Day, observed on July 28 every year, aims to raise global awareness of hepatitis — a group of infectious diseases known as Hepatitis A, B, C, D, and E — and encourage prevention, diagnosis and treatment. Hepatitis affects hundreds of millions of people worldwide, causing acute and chronic disease and killing close to 1.34 million people every year.Hepatitis causes liver diseases and can also kill a person.In some countries hepatitis B is commonest cause of cirrhosis and may also cause liver cancer(HCC)