| suppurative hepatitis | Hepatitis with abscess formation; often amoebic in origin. (05 Mar 2000) |
|---|---|
| delta hepatitis | Acute or chronic hepatitis caused by the hepatitis delta virus, a defective RNA virus requiring HBV for replication. The acute type occurs in two forms: 1) coinfection, the simultaneous occurrence of hepatitis B virus and hepatitis delta virus infections, which usually is self-limiting; 2) superinfection, the appearance of hepatitis delta virus infection in a hepatitis B virus carrier, which often leads to chronic hepatitis The chronic type appears to be more severe than other types of viral hepatitis. Synonym: delta hepatitis, hepatitis D. (05 Mar 2000) |
| drug-induced hepatitis | <hepatology, pathology> Inflammation and hepatocellular damage of the liver that is caused by a drug. Some medications may cause inflammation of the liver as a drug side effect or drug toxicity. Drugs that are known to cause hepatitis include acetaminophen, isoniazid, halothane, methyldopa, erythromycin and oral contraceptives. (27 Sep 1997) |
| duck hepatitis virus | A DNA virus of the genus Hepadnavirus, in the family Hepadnaviridae, causing virus hepatitis of ducks. (05 Mar 2000) |
| duck viral hepatitis | An acute, highly contagious disease of young ducklings caused by an enterovirus and characterised by lethargy, spasmodic paddling and rapid death. (05 Mar 2000) |
| immunization, hepatitis a | When immediate protection against hepatitis a (infectious hepatitis) is needed, immunoglobulins are used. Protection is effective only if given within 2 weeks of exposure and lasts but 2-4 months. Immunoglobulins can be used to protect household contacts of someone with acute viral hepatitis and travelers to regions with poor sanitation and high hepatitis a rates, when the traveler has to depart sooner than the vaccines can take effect (about 2 weeks). Travelers can receive the immunoglobulin and vaccine simultaneously and be protected immediately and for longer term. When immediate protection is not needed, hepatitis a vaccines are considered for individuals in high-risk settings, including frequent world travelers, sexually active individuals with multiple partners, homosexual men, individuals using illicit drugs, employees of daycare centres, and certain health care workers, and sewage workers. Two hepatitis a vaccines called havrix and vaqta are commercially available in the u.s. Both are highly effective and provide protection even after only one dose. Two doses are recommended for adults and 3 doses for children (under 18 years of age) to provide prolonged protection. (12 Dec 1998) |
| immunization, hepatitis b | Hepatits B (hep B) vaccine gives prolonged protection, but 3 shots over a half year are usually required. In the u.s., all infants receive hep b vaccine. Two vaccines (engerix-b, and recombivax-hb) are available in the us. The first dose of hep b vaccine is frequently given while the newborn is in the hospital or at the first doctor visit following birth. The second dose is given about 30 days after the initial dose. A booster dose is performed approximately six months later. Babies born to mothers testing positive for hep b receive, in addition, hbig (hep b immune globulin) for prompt protection. Older children (11-12 years) are advised to receive a hep b booster as are adults in high-risk situations including healthcare workers, dentists, intimate and household contacts of patients with chronic hep b infection, male homosexuals, individuals with multiple sexual partners, dialysis patients, iv drug users, and recipients of repeated transfusions. Health care workers accidentally exposed to materials infected with hep b (such as needle sticks), and individuals with known sexual contact with hep b patients are usually given both hbig and vaccine to provide immediate and long term protection. (12 Dec 1998) |
| immunization, infectious hepatitis | See Immunization, hepatitis a. (12 Dec 1998) |
| immunization, serum hepatitis | See Immunization, hepatitis b. (12 Dec 1998) |
| infectious canine hepatitis | A disease of dogs, caused by canine adenovirus 1, and characterised by fever, depression, loss of appetite, vomiting, bloody diarrhoea, petechial haemorrhages in the gums, pale mucous membranes, and jaundice. Synonym: hepatitis contagiosa canis, Rubarth's disease. (05 Mar 2000) |
| infectious hepatitis | <virology> A form of viral hepatitis, known as infectious hepatitis, due to its ability to be spread through personal contact with oral secretions or stool. Virus will be shed in the stools of an infected individual 2-3 weeks prior to the onset of any symptoms. Hepatitis A may also be transmitted sexually. Symptoms are similar to those of influenza, but the skin and eyes may become yellow. Recent travel to a third world country is a risk factor. There is no specific treatment but infected individuals should avoid potentially hepatotoxic substances. The virus is a small (27nm diameter) single stranded RNA virus with some resemblance to enteroviruses such as polio. (27 Sep 1997) |
| infectious hepatitis immunization | See Immunization, hepatitis a. (12 Dec 1998) |
| infectious hepatitis virus | <virology> An RNA virus (hepatovirus) in the family Picornaviridae, that is the causative agent of viral hepatitis type A. The virus replicates in hepatocytes and is presumed to reach the intestine via the bile duct. Transmission occurs by the faecal-oral route. Synonym: infectious hepatitis virus. (20 Sep 2002) |
| infectious necrotic hepatitis of sheep | A disease of sheep caused by the bacterium Clostridium novyi, which invades livers damaged by the fluke Fasciola hepatica and causes severe necrosis and death; this disease occurs in nearly all parts of the world, including the U.S. Sometimes called black disease because of the extensive haemorrhages seen on the inner surface of the pelt when it is removed. Synonym: black disease. (05 Mar 2000) |
| oriental cholangio-hepatitis | <radiology> Recurrent pyogenic hepatitis, pyogenic cholangitis, seen in Orient and in Asian immigrants, aetiology: Clonorchis sinensis (?), stones, dilated ducts filled with stones, soft, pigmented stones most likely to be no shadow on ultrasound, stricture, obstruction, abscess, increased incidence of cholangiocarcinomarcinoma Differential diagnosis: sclerosing cholangitis, Caroli disease (12 Dec 1998) |