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Hepatitis A: What you need to know

Hepatitis A is a viral infection that affects the liver. Caused by the hepatitis A virus (HAV), it is mainly transmitted through the consumption of contaminated water or food, or through direct contact with an infected person. Unlike other forms of hepatitis, hepatitis A does not become chronic and usually resolves without serious complications.

Symptoms of hepatitis A

Symptoms typically appear 2 to 6 weeks after exposure to the virus and may include:

Intense fatigue
Fever
Nausea and vomiting
Jaundice (yellowing of the skin and eyes)
Dark urine and light-colored stools
Abdominal pain, especially near the liver

Some people, especially children, may be asymptomatic, which complicates diagnosis without testing.

Transmission mode

The hepatitis A virus is primarily spread through the fecal-oral route. Risk factors include:

Consumption of contaminated water or food (uncooked fruits, vegetables, seafood)
Direct contact with an infected person (poor handwashing)
Travel to areas where hygiene is limited

Prevention

Prevention relies on good hygiene practices and vaccination:

Vaccination : An effective vaccine is available and recommended for travellers, people at risk or in endemic areas.
Hygiene : Wash your hands regularly, especially after going to the toilet or before eating.
Drinking water : Drink bottled water in at-risk areas and avoid unwashed raw food.

Treatment

There is no specific treatment for hepatitis A. Management consists of:

Rest the body and avoid physical exertion
Maintain good hydration
Avoid alcohol and medications that are toxic to the liver.

Most patients recover completely within a few weeks to a few months.

Epidemiological data

According to the World Health Organization (WHO), approximately 1.4 million cases of hepatitis A are reported worldwide each year, primarily in areas with poor sanitation. In France, thanks to improved sanitation and vaccination, the incidence is low, with around 1,000 cases annually.

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