What is Hepatitis D?

Hepatitis D is a serious liver infection caused by the Hepatitis D virus (HDV). It only occurs in people who already have Hepatitis B because HDV needs the Hepatitis B virus to survive and spread.

Hepatitis D can cause more severe liver disease and may increase the risk of cirrhosis, liver failure, and liver cancer. Some people experience symptoms shortly after infection, while others may not have symptoms until liver damage has occurred over time.

Preventing and treating Hepatitis B is the best way to prevent Hepatitis D.

Hepatitis D Fast Facts

Serious liver
infection

Preventable with
hepatitis B vaccine
h

Spread through
blood

Requires
hepatitis B

How it Spreads

Blood to Blood
Contact

Sexual
Contact

During
Childbirth

Sharing needles
and equipment

Hepatitis D is a serious liver infection caused by the hepatitis D virus (HDV).

It spreads through contact with infected blood and only occurs in people who have hepatitis B.

Why Testing Matters

Co-infection with Hepatitis B and D can lead to more serious liver disease, including faster progression to cirrhosis and liver failure.

People with chronic hepatitis B
should consider being tested
for hepatitis D.

Treatment and Recovery

Routine liver
testing

Managing
hepatitis B

Antiviral treatment
options

Hepatitis D treatment is more limited and specialized

Prevention

Prevent Hepatitis D

  • Vaccination for
    hepatitis B

  • Avoid sharing needles

  • Practice safer sex

  • Avoid blood exposure

If you aren’t sure whether you’ve been vaccinated for hep B, a blood test can tell if you are protected.

  • Get vaccinated if you are not already protected

  • Get tested if you have symptoms or possible exposure

  • Take precautions to prevent spreading infection to others

Take the Next Step

Hepatitis D is preventable. Vaccination for hepatitis B is
the best protection.

Find a vaccination or testing site near you.

Continue learning about viral hepatitis