Hepatitis A

Hepatitis A is a contagious liver infection spread mainly via ingestion of contaminated food, water, or close contact with infected persons. Symptoms range from mild fatigue and nausea to jaundice and severe liver inflammation. While most people recover fully, older adults and individuals with chronic liver disease are at higher risk of severe illness. Vaccination is the safest and most effective defence, providing long-lasting protection and reducing the burden of disease in communities.

The Hepatitis A vaccine is a preventive measure that protects against:

• Acute HAV infection
• Severe liver inflammation and hepatitis
• Hospitalisation and complications in high-risk individuals
• Transmission of HAV in communities and among travellers

It works by stimulating immune memory against the hepatitis A virus (HAV), thereby reducing the risk of symptomatic infection upon exposure.

• Decreases the chance of infection and serious liver complications
• Long-lasting immunity (decades or possibly lifelong) in healthy individuals
• Approved and recommended by major public health authorities (CDC, WHO)
• Best protection when given before exposure (e.g. before travel)
• Helps prevent outbreaks and offers indirect protection within communities
• Saves costs, morbidity, and emotional stress associated with HAV disease

The Hepatitis A vaccine is generally very well tolerated. Side effects, if they occur, are mild and temporary:

Precautions to follow before receiving the Hepatitis A vaccine:

• Disclose any history of severe allergic reactions to vaccine components
• Delay vaccination if you currently have a moderate or severe illness
• Mild illnesses (e.g. low-grade cold) typically do not preclude vaccination
• Stay hydrated and have a light meal before the appointment
• Wear attire allowing access to the upper arm
• Remain under observation for ~15 minutes post-vaccination to monitor rare adverse reactions