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Does norovirus induce acute hepatitis?

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Norovirus gastroenteritis can cause rare but serious liver inflammation (hepatitis), particularly in children. Prompt recognition by clinicians is crucial for managing this self-limiting condition.

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Area of Science:

  • Hepatology
  • Gastroenterology
  • Virology

Background:

  • Norovirus is a leading cause of acute viral gastroenteritis.
  • Extra-intestinal manifestations of norovirus infection are uncommon and poorly understood.
  • Acute viral hepatitis is a rare complication of norovirus gastroenteritis.

Purpose of the Study:

  • To evaluate the risk and clinical characteristics of acute viral hepatitis associated with norovirus gastroenteritis.
  • To synthesize existing literature on norovirus-induced hepatitis.

Main Methods:

  • A comprehensive literature review was conducted from January 1967 to April 2019.
  • Databases searched included MEDLINE, EMBASE, and the Cochrane library.
  • Five publications detailing 17 cases of norovirus-induced hepatitis were included.

Main Results:

  • All 17 cases exhibited elevated liver enzymes (ALT and AST).
  • The majority of affected individuals (88%) were under 18 years old.
  • Patients experienced prolonged illness (average 10 days) with liver enzymes normalizing in about 22.5 days; all recovered fully.

Conclusions:

  • Norovirus gastroenteritis is typically self-limiting, often not requiring hospitalization.
  • Clinicians should consider norovirus-induced transaminitis, especially in children presenting with prolonged gastroenteritis.
  • Awareness of this rare complication can aid in appropriate diagnosis and management.