Hepatitis E causes

Revision as of 19:56, 26 August 2014 by Joao Silva (talk | contribs)
Jump to navigation Jump to search

Hepatitis E Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Epidemiology and Demographics

Risk Factors

Screening

Differentiating Hepatitis E from other Diseases

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Treatment

Medical Therapy

Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Hepatitis E causes On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Hepatitis E causes

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Hepatitis E causes

CDC on Hepatitis E causes

Hepatitis E causes in the news

Blogs on Hepatitis E causes

Directions to Hospitals Treating Hepatitis E

Risk calculators and risk factors for Hepatitis E causes

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]

Overview

Taxonomy

Viruses; ssRNA viruses; ssRNA positive-strand viruses; Hepeviridae; Hepevirus; Hepatitis E virus[1]

Biology

Hepatitis E virus Courtesy: Centers for Disease Control and Prevention[2]

The viral particles are 27 to 34 nanometers in diameter, are non-enveloped and contain a single-strand of positive-sense RNA that is approximately 7300 bases in length. The virus particle was first visualised in 1983[3] but was only molecularly cloned in 1990.[4]

It was previously classified family Caliciviridae. However, its genome more closely resembles the rubella virus. It is now classified in a new virus family, named as Hepeviridae.

  • Caused by the Hepatitis E virus (HEV)
  • HEV is found in the stool (feces) of persons and animals with hepatitis E.
  • HEV is spread by eating or drinking contaminated food or water.
  • Transmission from person to person occurs less commonly than with hepatitis A virus
  • Most outbreaks in developing countries have been associated with contaminated drinking water. [3]

Life Cycle

Genotypes

Tropism

Natural Reservoir

References

  1. "Hepatitis E virus taxonomy".
  2. "http://phil.cdc.gov/phil/details.asp". External link in |title= (help)
  3. Balayan MS, Andjaparidze AG, Savinskaya SS; et al. (1983). "Evidence for a virus in non-A, non-B hepatitis transmitted via the fecal-oral route". Intervirology. 20 (1): 23–31. PMID 6409836.
  4. Reyes GR, Purdy MA, Kim JP; et al. (1990). "Isolation of a cDNA from the virus responsible for enterically transmitted non-A, non-B hepatitis". Science. 247 (4948): 1335–9. doi:10.1126/science.2107574. PMID 2107574.