Hepatitis B virus Huamin Wang 王华民 Department of Microbiology Immunology Hainan Medical College 2007
Hepatitis B Virus Huamin Wang 王华民 Department of Microbiology & Immunology Hainan Medical College 2007
Statistics on HBv Most healthy adults(90%)who are infected will recover and develop protective antibodies against future hepatitis B infections 9o% of infants and up to 50% of young children infected with hepatitis B will develop chronic infections
Statistics on HBV • Most healthy adults (90%) who are infected will recover and develop protective antibodies against future hepatitis B infections • 90% of infants and up to 50% of young children infected with hepatitis B will develop chronic infections
Hepatitis B In the World 2 billion people have been infected (1 out of 3 people) 400 million people are chronically infected 10-30 million will become infected each year An estimated 1 million people die each year from hepatitis B and its complications Approximately 2 people die each minute from hepatitis B
Hepatitis B In the World • 2 billion people have been infected (1 out of 3 people). • 400 million people are chronically infected. • 10-30 million will become infected each year. • An estimated 1 million people die each year from hepatitis B and its complications. • Approximately 2 people die each minute from hepatitis B
Hepatitis B In the United States 12 million Americans have been infected (1 out of 20 people) More than one million people are chronically infected Up to 100,000 new people will become infected each year 5,000 people will die each year from hepatitis B and its complications Approximately 1 health care worker dies each day from hepatitis B
Hepatitis B In the United States • 12 million Americans have been infected (1 out of 20 people). • More than one million people are chronically infected . • Up to 100,000 new people will become infected each year. • 5,000 people will die each year from hepatitis B and its complications. • Approximately 1 health care worker dies each day from hepatitis B
Hepatitis B in China 1.3 billion people the world's largest population of hepatitis B patients, with nearly half a million people dieing of the liver disease every year 120 million Chinese have tested positive for hepatitis B, which has become a severe public health problem in the country
Hepatitis B in China • 1.3 billion people • the world's largest population of hepatitis B patients, with nearly half a million people dieing of the liver disease every year • 120 million Chinese have tested positive for hepatitis B, which has become a severe public health problem in the country