Hepatitis A,

Definition

Hepatitis A is a viral liver infection caused by the hepatitis A virus (HAV). It is typically transmitted through ingestion of contaminated food or water.

5 Must Know Facts For Your Next Test

1. Hepatitis A is preventable through vaccination, which induces adaptive immunity.
2. HAV does not cause chronic infection and usually resolves on its own within a few weeks to months.
3. The vaccine for hepatitis A is an inactivated virus vaccine, requiring two doses for long-term protection.
4. Symptoms of hepatitis A include jaundice, fatigue, abdominal pain, and nausea.
5. Outbreaks are often linked to poor sanitation and lack of clean drinking water.

Review Questions

• What type of vaccine is used for preventing hepatitis A?
• How is hepatitis A primarily transmitted?
• What are common symptoms associated with a hepatitis A infection?

Related terms

Adaptive Immunity: A form of immunity that develops after exposure to specific antigens and involves the activation of lymphocytes.

Inactivated Vaccine: A type of vaccine created from a virus or bacteria that has been killed but can still provoke an immune response.

Jaundice: A yellowing of the skin and eyes due to elevated levels of bilirubin, commonly associated with liver infections like hepatitis.