noun, Pathology.
a form of hepatitis caused by a DNA virus (hepatitis B virus, or HBV) that persists in the blood, characterized by a long incubation period: usually transmitted by sexual contact or by injection or ingestion of infected blood or other bodily fluids.
a form of hepatitis caused by a virus transmitted by infected blood (as in transfusions), contaminated hypodermic needles, sexual contact, or by contact with any other body fluid Former name serum hepatitis

hepatitis B n.
A form of hepatitis caused by a DNA virus that persists in the blood serum and is transmitted by infected blood or blood derivatives, or by contaminated needles or other instruments. The disease has a long incubation period and symptoms that may become severe or chronic, causing serious damage to the liver. Also called serum hepatitis.


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    hepatitis B core antigen n. Abbr. HBcAg A core protein antigen of the hepatitis B virus found on the Dane particle and also in hepatocyte nuclei in hepatitis B infections.

  • Hepatitis b e antigen

    hepatitis B e antigen n. Abbr. HBe, HBeAg A core protein antigen of the hepatitis B virus distinct from both the surface and core antigens.

  • Hepatitis b surface antigen

    hepatitis B surface antigen n. Abbr. HBsAg An antigen of the small spherical and filamentous forms of hepatitis B antibodies that is also present on the Dane particle.

  • Hepatitis b vaccine

    hepatitis B vaccine n. Abbr. HB A vaccine prepared from the inactivated surface antigen of the hepatitis B virus and used to immunize against hepatitis B.

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