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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 ]
The general stages of seroconversion for hepatitis B, where the line of detectability indicates seropositivity. In immunology, seroconversion is the development of specific antibodies in the blood serum as a result of infection or immunization, including vaccination.
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 B vaccine is a vaccine that prevents hepatitis B. [13] ... Blood testing to verify that the vaccine has worked is recommended in those at high risk. [13]
HBcAg (core antigen) is a hepatitis B viral protein. [ 1 ] [ 2 ] It is an indicator of active viral replication; this means the person infected with Hepatitis B can likely transmit the virus on to another person (i.e. the person is infectious).
Since testing typically occurs late in acute viral hepatitis, it is conventionally associated with an AST/ALT ratio <1, though early in the disease, the AST/ALT ratio is often elevated. As the acute liver damage resolves, the body has more time to clear ALT, so in the absence of chronic liver disease, the AST/ALT ratio gradually returns to ...
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