Diseases, Conditions, Syndromes

Hepatitis B: What people can learn from donkeys

The discovery of a previously unknown hepatitis B virus in donkeys and zebras opens up new opportunities for understanding the course of the disease. A global research consortium was able to show that the course of the infection ...

Health

USPSTF recommends hep B screen for at-risk teens, adults

The U.S. Preventive Services Task Force (USPSTF) concludes that screening adults and adolescents at increased risk for hepatitis B virus (HBV) infection has moderate net benefit. These findings form the basis of a final recommendation ...

Diseases, Conditions, Syndromes

Cirrhosis cases rising among women in North America

(HealthDay)—Cirrhosis disease burden in women has increased substantially since 2000, according to a study presented at The Liver Meeting, the annual meeting of the American Association for the Study of Liver Diseases, ...

Diseases, Conditions, Syndromes

Ontario should vaccinate newborns for hepatitis B, study suggests

Not all pregnant women are universally screened for hepatitis B virus (HBV) in Ontario, even though this screening is recommended, and the majority of those who test positive do not receive follow-up testing or interventions, ...

page 1 from 29

Hepatitis B

Hepatitis B is a disease caused by HBV hepatitis B virus which infects the liver of hominoidae, including humans, and causes an inflammation called hepatitis. Originally known as "serum hepatitis", the disease has caused epidemics in parts of Asia and Africa, and it is endemic in China. About a third of the world's population, more than 2 billion people, have been infected with the hepatitis B virus. This includes 350 million chronic carriers of the virus. Transmission of hepatitis B virus results from exposure to infectious blood or body fluids containing blood.

The acute illness causes liver inflammation, vomiting, jaundice and—rarely—death. Chronic hepatitis B may eventually cause liver cirrhosis and liver cancer—a fatal disease with very poor response to current chemotherapy. The infection is preventable by vaccination.

Hepatitis B virus is an hepadnavirus—hepa from hepatotrophic and dna because it is a DNA virus—and it has a circular genome composed of partially double-stranded DNA. The viruses replicate through an RNA intermediate form by reverse transcription, and in this respect they are similar to retroviruses. Although replication takes place in the liver, the virus spreads to the blood where virus-specific proteins and their corresponding antibodies are found in infected people. Blood tests for these proteins and antibodies are used to diagnose the infection.

This text uses material from Wikipedia, licensed under CC BY-SA