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An estimated 296 million people, or 3.8% of the global population, had chronic hepatitis B infections as of 2019. Another 1.5 million developed acute infections that year, and 820,000 deaths occurred as a result of HBV. [1] Cirrhosis and liver cancer are responsible for most HBV-related deaths. [18]
Acute hepatitis B; Acute hepatitis C; Acute hepatitis D – this is a superinfection with the delta-agent in a patient already infected with hepatitis B; Acute hepatitis E; Chronic viral hepatitis; Other viral hepatitis viruses may exist but their relation to the disease is not firmly established like the previous ones (hepatitis F, GB virus C ...
Viral hepatitis is liver inflammation due to a viral infection. [1] [2] It may present in acute form as a recent infection with relatively rapid onset, or in chronic form, typically progressing from a long-lasting asymptomatic condition up to a decompensated hepatic disease and hepatocellular carcinoma (HCC).
HBsAg (hepatitis B surface antigen) was the first hepatitis B virus protein to be discovered. [15] It consists of small (S), medium (M) and large (L) protein. [16] HBcAg (hepatitis B core antigen) is the main structural protein of HBV icosahedral nucleocapsid and it has function in replication of the virus. [17]
Hepatitis D is a defective virus that requires hepatitis B to replicate and is only found with hepatitis B co-infection. [17] In adults, hepatitis B infection is most commonly self-limiting, with less than 5% progressing to chronic state, and 20 to 30% of those chronically infected developing cirrhosis or liver cancer. [ 31 ]
Hepatitis B virus DNA polymerase is a hepatitis B viral protein. [ 1 ] [ 2 ] It is a DNA polymerase that can use either DNA or RNA templates and a ribonuclease H that cuts RNA in the duplex. Both functions are supplied by the reverse transcriptase (RT) domain.
FibroTest has been evaluated in relation to liver biopsy (the current reference standard in liver disease assessment) in people with hepatitis C, hepatitis B, [1] alcoholic liver disease, [2] and non-alcoholic fatty liver disease. [3] They are most useful for cirrhosis and less useful for other stages of liver disease. [4]
The key to winning the fight against hepatitis B and liver cancer is prevention, and prevention begins with outreach and education. The Asian Liver Center is dedicated to serving the Asian community through a variety of outreach and education programs.