Third of world's people infected with hepatitis-WHO

Around one third of the global population, or 2 billion people, have been infected with the liver disease hepatitis which kills about a million victims annually

And although most of those carrying hepatitis do not know they have it, they can unknowingly transmit it to others and at any time in their lives it can develop to kill or disable them, the United Nations agency warned.

"This is a chronic disease across the whole world, but unfortunately there is very little awareness, even among health policy-makers, of its extent," WHO hepatitis specialist Steven Wiersma told a news conference.

The conference marked the first U.N. World Hepatitis Day, called by the world body to raise awareness of the viral disease, largely spread by contaminated water and food, blood, semen and other body fluids.

Wiersma said the disease -- which has five main viruses -- produced a "staggering toll" on health care systems around the globe and had the potential to spark epidemics, as well as being the main cause of liver cirrhosis and cancer.

Vaccination campaigns had scored considerable success in many countries, with about 180 of the WHO's 193 member states now including the B vaccine in infant immunisation programmes, the agency said.

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