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Hepatitis E is inflammation of the liver caused by the hepatitis E virus (HEV). The virus has at least 4 different types: genotypes 1, 2, 3 and 4. Genotypes 1 and 2 have been found only in humans. Genotypes 3 and 4 circulate in several animals including pigs, wild boars and deer without causing any disease, and occasionally infect humans. The virus is shed in the stools of infected persons and enters the human body through the intestine. It is transmitted mainly through contaminated drinking water. The infection is usually self-limiting and resolves within 2–6 weeks. Occasionally a serious disease known as fulminant hepatitis (acute liver failure) develops, which can be fatal. What Is Hepatitis E? Hepatitis E is a potentially serious acute disease. It is caused by the hepatitis E virus (HEV). The virus targets the liver. According to the World Health Organization (WHO), 20 million cases of hepatitis E infection occur every year, and 44,000 of these cases resulted in death in 2015. It i...

Hepatitis D is an inflammation of the liver caused by the hepatitis D virus (HDV), which requires HBV for its replication. Hepatitis D infection cannot occur in the absence of hepatitis B virus. HDV-HBV co-infection is considered the most severe form of chronic viral hepatitis due to more rapid progression towards hepatocellular carcinoma and liver-related death. What is Hepatitis D? Hepatitis D, also known as the hepatitis delta virus, is an infection that causes the liver to become inflamed. This swelling can impair liver function and cause long-term liver problems, including liver scarring and cancer. The condition is caused by the hepatitis D virus (HDV). HDV is one of many forms of hepatitis. Other types include: hepatitis A , which is transmitted through direct contact with feces or indirect fecal contamination of food or water hepatitis B, which is spread through exposure to body fluids, including blood, urine, and semen hepatitis C, which is spread by exposure to contaminated...

  Hepatitis B is an infection of the liver caused by the hepatitis B virus (HBV). It can be acute and resolve without treatment. However, some forms can be chronic, and these could lead to cirrhosis and liver cancer. In this article, learn more about HBV, including transmission, early symptoms, and treatment. What Is Hepatitis B? Hepatitis B is a liver infection caused by the hepatitis B virus (HBV). HBV is one of five types of viral hepatitis. The others are hepatitis A, C, D, and E. Each is a different type of virus, and types B and C are most likely to become chronic. Symptoms Many HBV infections occur during infancy or childhood. This is because a mother can pass HBV to her child during childbirth. However, doctors rarely diagnose HBV in childhood, as it causes few obvious symptoms. Symptoms of a new HBV infection may not be apparent in children under 5 years of age or in adults with a suppressed immune system. Among those aged 5 years and over, around 30–50% will show initial ...

  Hepatitis A is a viral infection that causes liver inflammation and damage. Inflammation is swelling that occurs when tissues of the body become injured or infected. Inflammation can damage organs. Viruses invade normal cells in your body. Many viruses cause infections that can be spread from person to person. The hepatitis A virus typically spreads through contact with food or water that has been contaminated by an infected person’s stool. Hepatitis A is an acute or short-term infection, which means people usually get better without treatment after a few weeks. Hepatitis A does not lead to long-term complications, such as cirrhosis, because the infection only lasts a short time. You can take steps to protect yourself from hepatitis A, including getting the hepatitis A vaccine. If you have hepatitis A, you can take steps to prevent spreading hepatitis A to others. Symptoms Hepatitis A signs and symptoms typically don't appear until you've had the virus for a few weeks. But no...