File Name: hepatitis b virus root cause and brief explanation .zip
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Hepatitis , inflammation of the liver that results from a variety of causes, both infectious and noninfectious. Infectious agents that cause hepatitis include viruses and parasites. Noninfectious causes include certain drugs and toxic agents. In some instances hepatitis results from an autoimmune reaction directed against the liver cells of the body. The signs and symptoms of acute viral hepatitis result from damage to the liver and are similar regardless of the hepatitis virus responsible. Patients may experience a flulike illness, and general symptoms include nausea , vomiting , abdominal pain , fever , fatigue , loss of appetite, and, less commonly, rash and joint pain. Sometimes jaundice , a yellowing of the skin and eyes, will develop.
Last Updated September This article was created by familydoctor. Many different things can cause hepatitis. Other potential causes are:. Most people get over the acute inflammation in a few days or a few weeks. Hepatitis B also called Hep B is a serious liver infection caused by the hepatitis B virus. Symptoms of hepatitis B can range from mild to severe.
Hepatitis B virus HBV infection constitutes a global public health problem. In order to establish how HBV was disseminated across different geographic regions, we estimated the levels of regional clustering for genotypes D and A. Phylogeographic analysis was conducted by the reconstruction of ancestral states using the criterion of parsimony. In contrast, HBV-A sequences form two major clusters, the first including sequences mostly from sub-Saharan Africa, and the second including sequences mostly from Western and Central Europe. Conclusion: We observed considerable differences in the global dissemination patterns of HBV-D and HBV-A and different levels of monophyletic clustering in relation to the regions of prevalence of each genotype.
It can be acute and resolve without treatment. However, some forms can be chronic, and these could lead to cirrhosis and liver cancer. HBV is a major global health concern. In fact, in , HBV-related liver disease caused around , deaths worldwide. For most adults, HBV is a short term condition that causes no permanent damage. HBV can cause infection and inflammation of the liver.
Hepatitis B is an infectious disease caused by the hepatitis B virus HBV that affects the liver ;   it is a type of viral hepatitis. The virus is transmitted by exposure to infectious blood or body fluids. The infection has been preventable by vaccination since About a third of the world population has been infected at one point in their lives. Acute infection with hepatitis B virus is associated with acute viral hepatitis , an illness that begins with general ill-health, loss of appetite, nausea, vomiting, body aches, mild fever, and dark urine, and then progresses to development of jaundice.
For some people, hepatitis B infection becomes chronic, meaning it lasts more than six months. Having chronic hepatitis B increases your risk of developing liver failure, liver cancer or cirrhosis — a condition that permanently scars of the liver. Most adults with hepatitis B recover fully, even if their signs and symptoms are severe. Infants and children are more likely to develop a chronic long-lasting hepatitis B infection. A vaccine can prevent hepatitis B, but there's no cure if you have the condition.
Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). For some people, hepatitis B infection becomes chronic, meaning it lasts more Hepatitis B infection may be either short-lived (acute) or long lasting (chronic). Chronic hepatitis B infection may last a lifetime, possibly leading to.
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