Viral Hepatitis A

Medically reviewed by Joel Nyandigira Updated August 2026

Overview


Viral hepatitis A is a liver infection caused by the hepatitis A virus, spread through contaminated food and water. Unlike hepatitis B and C, it does not cause chronic infection and most people recover fully.

Symptoms of Viral Hepatitis A


  • Fatigue and loss of appetite
  • Nausea and vomiting
  • Abdominal discomfort, particularly in the upper right area
  • Jaundice (yellowing of the skin and eyes)
  • Dark urine and pale stools
  • Many infections, especially in young children, cause mild or no symptoms

What Causes Viral Hepatitis A?


  • Caused by the hepatitis A virus, spread through the faecal-oral route via food or water contaminated with the virus, or close contact with an infected person.
  • Risk is increased by poor sanitation, unsafe water supply, and inadequate food hygiene.

How is Viral Hepatitis A Diagnosed?


  • Diagnosed with a blood test for hepatitis A antibodies (IgM), which confirms a recent infection.
  • Liver function blood tests support the diagnosis and help assess severity.

Treatment for Viral Hepatitis A


There is no specific antiviral treatment; management is supportive with rest, adequate fluids, and avoiding alcohol and medicines that stress the liver while recovering.

Most people, especially children, recover fully within a few weeks to a couple of months without lasting liver damage.

Severe cases with signs of liver failure (such as confusion or worsening jaundice) are rare but require urgent hospital-level care.

Because hepatitis A does not become chronic, once someone has recovered they generally have lifelong immunity.

How to Prevent Viral Hepatitis A


  • Complete hepatitis A vaccination where available and recommended, particularly for travellers to endemic areas.
  • Drink water from safe sources, or boil or treat water before drinking.
  • Wash hands with soap after using the toilet and before preparing or eating food.
  • Wash fruits and vegetables thoroughly and ensure food is properly cooked.
1 Source

Mfamasia's health articles are based on evidence-backed information and review by medical professionals to ensure accuracy, reliability and up-to-date health standards.

  1. World Health Organization (WHO); Centers for Disease Control and Prevention (CDC); Mayo Clinic; Cleveland Clinic — general clinical reference sources.