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820,000 resulting from hepatitis B (2019) [1] Hepatitis B is an infectious disease caused by the hepatitis B virus (HBV) that affects the liver; [1][6] it is a type of viral hepatitis. [7] It can cause both acute and chronic infection. [1] Many people have no symptoms during an initial infection. For others, symptoms may appear 30 to 180 days ...
Hepatitis B virus is classified in the genus Orthohepadnavirus, which contains 11 other species. [3] The genus is classified as part of the Hepadnaviridae family, which contains four other genera, Avihepadnavirus, Herpetohepadnavirus, Metahepadnavirus and Parahepadnavirus. [3] This family of viruses is the only member of the viral order ...
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. [ 30 ]
Infectious diseases, gastroenterology. 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).
HBcAg is an antigen that can be found on the surface of the nucleocapsid core (the inner most layer of the hepatitis B virus). While both HBcAg and HBeAg are made from the same open reading frame, HBcAg is not secreted as a monomer. [3] HBcAg is considered "particulate" and it does not circulate in the blood, but recent study show it can be ...
Seroconversion. In immunology, seroconversion is the development of specific antibodies in the blood serum as a result of infection or immunization, including vaccination. [1][2] During infection or immunization, antigens enter the blood, and the immune system begins to produce antibodies in response.
Hepatitis B vaccine. Hepatitis B vaccine is a vaccine that prevents hepatitis B. [13] The first dose is recommended within 24 hours of birth with either two or three more doses given after that. [13] This includes those with poor immune function such as from HIV/AIDS and those born premature. [13]
Hepadnaviridae[a] is a family of viruses. [2] Humans, apes, and birds serve as natural hosts. There are currently 18 species in this family, divided among 5 genera. [3] Its best-known member is hepatitis B virus. Diseases associated with this family include: liver infections, such as hepatitis, hepatocellular carcinomas (chronic infections ...