Overview

Hepatitis B is a viral infection affecting the liver. It can be transmitted sexually, through blood or from mother to child. Vaccination is highly effective prevention.

Causes and transmission

  • Transmitted through blood, sexual contact and mother-to-child transmission.
  • Sharing needles or exposure to infected blood also poses risk.

How it is assessed

  • Blood tests detect hepatitis B surface antigen and antibodies.
  • Further tests assess chronic infection and liver status.

Management considerations

  • Monitoring and antiviral treatment may be needed for chronic infection.
  • Vaccination protects those not yet infected.

Prevention

  • Hepatitis B vaccination is recommended for eligible people.
  • Avoid sharing needles and practice safer sex.

Key points

  • Can be sexually transmitted
  • Vaccination prevents infection
  • May become chronic
  • Testing guides management

When to seek care

  • Routine STI screening
  • Partner diagnosis
  • Vaccination questions