What is Hepatitis B?

letter blocks spelling hep b
letter blocks spelling hep b

Hepatitis B is a liver infection caused by the Hepatitis B virus (HBV). It can be either short-term (acute) or long-term (chronic). Chronic Hepatitis B can lead to serious health problems, including liver damage, cirrhosis, liver cancer, and death if left untreated.

People with Hepatitis B can also develop Hepatitis D, a more severe form of hepatitis that only occurs in those already infected with Hepatitis B.

Hepatitis B Fast Facts

Short or long
term illness

Vaccine available

Can lead to serious
health problems

Hepatitis B is
preventable

How it Spreads

Sexual contact

Sharing needles
or syringes

During
childbirth

Sharing personal
items

Hepatitis B is spread through contact with infected blood or body fluids.

Hepatitis B also spreads through sharing personal items such as razors, toothbrushes, or nail clippers that may have blood on them.

Why Testing Matters

Many people with Hepatitis B do not have symptoms, especially in the early stages. Testing is the only way to know you status.

Testing can determine whether you:

  • Have an active infection

  • Had a past infection

  • You are immune

Early diagnosis allows for monitoring and treatment to prevent serious liver disease.

Who Should Get Tested

Consider getting tested for
Hepatitis B if you:

  • Were born in a country where Hepatitis B is common

  • Have lived with or had sexual contact with someone who has Hepatitis B

  • Have ever injected drugs or shared needles or equipment

  • Are pregnant or planning to become pregnant

  • Have HIV or another condition that affects your immune system

  • Are receiving dialysis or have chronic liver disease

  • Work in healthcare or public safety and may be exposed to blood

  • Have elevated liver enzymes without a known cause

Not sure if you need testing?

Testing is simple and for many people is recommended at least once in their lifetime.

Hepatitis B Test Results

HBsAg (Surface Antigen): Indicates an active infection

Anti-HBs (Surface Antibody): Shows immunity from vaccination or past infection

Anti-HBc (Core Antibody): Indicates past or current infection

Learn what hepatitis B test results mean.

Treatment and Management

Hepatitis B is not curable, but it is manageable

Routine liver
testing

Avoiding
alcohol

Preventing
transmission

Antiviral
medications can reduce the amount of virus in the body.

People living with hepatitis B who are receiving treatment and have an undetectable viral load are much less likely to pass the virus to others.

Prevention

Prevent
Hepatitis B

  • Get vaccinated

  • Don’t share needles

  • Practice safer sex

  • Get tested

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

Ready to get vaccinated?

Find a nearby location.

Who Should
Get Vaccinated?

  • Born in or travel to areas where hep B is common

  • Inject drugs

  • Sex with multiple partners

  • Close contact with someone with hep B

  • Have chronic liver disease or HIV

  • Are pregnant or planning pregnancy

  • Work in healthcare or public safety

  • Haven’t been vaccinated for hepatitis B

Hepatitis B is preventable. Vaccination is the best protection.

  • 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

Find a vaccination or testing site near you.

Continue learning about viral hepatitis