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Hepatitis A is an infectious disease of the liver caused by Hepatovirus A (HAV); [7] it is a type of viral hepatitis. [8] Many cases have few or no symptoms, especially in the young. [ 1 ] The time between infection and symptoms, in those who develop them, is two–six weeks. [ 2 ]
Hepatitis A and E are mainly spread by contaminated food and water. [3] Hepatitis B is mainly sexually transmitted, but may also be passed from mother to baby during pregnancy or childbirth and spread through infected blood. [3] Hepatitis C is commonly spread through infected blood such as may occur during needle sharing by intravenous drug ...
Hepatitis A vaccine is a vaccine that prevents hepatitis A. [2] [3] It is effective in around 95% of cases and lasts for at least twenty years and possibly a person's entire life. [4] If given, two doses are recommended beginning after the age of one. [2] It is given by injection into a muscle. [2]
The liver in disease: with special reference to aspiration liver biopsy Dame Sheila Patricia Violet Sherlock (31 March 1918 – 30 December 2001) was a British physician and medical educator who is considered the major 20th-century contributor to the field of hepatology (the study of the liver).
In 1989, investigators from the CDC (Daniel W. Bradley) and Chiron (Michael Houghton) identified the hepatitis C virus, which had previously been known as non-A, non-B hepatitis and could not be detected in the blood supply. [12] Only in 1992 was a blood test created that could detect hepatitis C in donated blood. [12]
Liver transplantation is the standard of care in people presenting with fulminant liver failure or those with the progression of disease despite multiple lines of therapy. [33] [34] [35] Many patients, once started on long-term immunosuppressive therapy, will remain on that treatment for life.
In the 1960s, the first virus that could cause hepatitis was discovered. This was hepatitis B virus, which was named after the disease it causes. [220] Hepatitis A virus was discovered in 1974. [221] The discovery of hepatitis B virus and the invention of tests to detect it have radically changed many medical, and some cosmetic procedures.
Cancer diagnosis can cause psychological distress and psychosocial interventions, such as talking therapy, may help people with this. [123] Some people choose to disclose the diagnosis widely; others prefer to keep the information private, especially shortly after the diagnosis, or to disclose it only partially or to selected people. [124]