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Hepatitis A

Hepatitis A is an enterovirus transmitted by the orofecal route, such as contaminated food. It causes an acute form of hepatitis and does not have a chronic stage. The patient's immune system makes antibodies against Hepatitis A that confer immunity against future infection. A vaccine is available that will prevent infection from hepatitis A for life. more...

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Features

Hepatitis A is a disease affecting the liver, and caused by the Hepatitis A virus (abbreviated HAV). Only 3 out of 4 people with hepatitis A have symptoms. Those symptoms may include:

  • Jaundice (showing up first as yellow eyes)
  • Dark urine
  • Nausea
  • Fever
  • Tiredness
  • Loss of appetite
  • Stomach ache
  • Vomiting

Treatment

There is no specific treatment for Hepatitis A. Rest is recommended during the acute phase of the disease when the symptoms are most severe.

Prognosis

The United States Centers for Disease Control and Prevention (CDC) in 1991 reported a low mortality rate of 4 deaths per 1000 cases for the general population but a higher rate of 17.5 per 1000 in those aged 50 and over.

Prevention

Hepatitis A can be prevented by good hygiene and sanitation. Vaccination is also available, and is recommended in areas where the prevalence of hepatitis A is high.

Ways to prevent hepatitis A include the following:

  • Wash hands with soap and warm water before preparing or eating food, and after sexual activity.
  • Keep bathrooms clean and disinfected after every use.
  • Cook shellfish thoroughly before eating.
  • Drink water from approved sources only.
  • Use a dental dam or sheet of plastic wrap during rimming.

Epidemiology

Hepatitis A outbreaks still occur in developed countries and are usually traced to unsanitary conditions at restaurants, including but not limited to employees failing to wash their hands after restroom breaks. The most widespread Hepatitis A outbreak in American history afflicted at least 640 people (killing four) in northeastern Ohio and southwestern Pennsylvania in late 2003. In November of that year, the outbreak was blamed on tainted green onions (imported from Mexico) at a restaurant in Monaca, Pennsylvania.

Read more at Wikipedia.org


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Outcomes of Lung Transplant Recipients previously infected with hepatitis C virus
From CHEST, 10/1/05 by Hina Sahi

PURPOSE: Outcomes of Lung Transplant in Hepatitis C virus (HCV) positive Recipients is not known. We describe our experience with 5 such patients.

METHODS: Charts of LTR known to be HCV positive prior to transplantation were reviewed for demographics, HCV etiology, HCV RNA viral load pre and post transplantation, liver biopsy results, transaminase levels during various points post transplantation, the development of acute hepatitis and survival.

RESULTS: 454 lung transplants were performed during a 14 year period, only five patients (1%) [age (yrs [+ or -] SD): 48 [+ or -] 9.7, 3 females], were anti-HCV seropositive. Etiology of HCV infection included IVDA (n=l), unknown causes (n=4), and two patients had concomitant liver disease due to alpha-1-antitrypsin deficiency and cystic fibrosis. All patients were diagnosed with HCV prior to transplantation and confirmed with HCV qualitative RNA testing. All recipients had disease severity documented by liver biopsy (minimal peri portal fibrosis n=3, no cirrhosis n=5). The median duration from HCV diagnosis to transplantation was 2 years [inter quartile range, 1 to 8.2 yrs). Pre transplantation median quantitative HCV RNA levels were 50,300 IU/ml [inter quartile range, 16,897 to 200,780,000 IU/ml]. Post transplantation median quantitative HCV RNA level were noted to markedly increase [level (IU/ml): 2,470,000 IU/ml (inter quartile range, 646,825 to 2,897,500 IU/ml)]. There was no statistically significant increase in transaminase levels pre and post LTX despite increase in HCV RNA levels. The longest surviving_patient in this cohort is 5 yrs post transplantation, the shortest survival being 8 months. The patient died of respiratory complications with no evidence of hepatic failure at the time of death [mean survival (months [+ or -] SD): 32.6 [+ or -] 23.9].

CONCLUSION: Although viral loads tended to significantly increase post transplantation, there was no significant difference in the episodes of acute hepatitis, hepatic failure or cirrhosis during the duration of follow up. Post transplant monitoring of quantitative RNA HCV levels was not of any prognostic value.

CLINICAL IMPLICATIONS: Further studies are needed to provide guidelines for monitoring of this population post transplantation.

DISCLOSURE: Hina Sahi, None.

Hina Sahi MD * Marie Budev DO Holli Blazey Other Atul Mehta MBBS Cleveland Clinic Foundation, Cleveland, OH

COPYRIGHT 2005 American College of Chest Physicians
COPYRIGHT 2005 Gale Group

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