Lack of Immunity to Hepatitis B

Lack of immunity to Hepatitis B means your body does not have antibodies to fight off the Hepatitis B virus. Hepatitis B is a serious liver infection caused by the Hepatitis B virus, or HBV. When you are immune, your body can recognize and stop the virus before it makes you sick.

Most people become immune to Hepatitis B through vaccination. Some people develop immunity after recovering from a past infection. If you have never been vaccinated and never had the infection, you have no immunity. This leaves you vulnerable to catching Hepatitis B if you are exposed to the virus.

Blood tests can check for Hepatitis B surface antibodies. These antibodies show whether you are protected. When antibodies are not detected, it means you are susceptible to infection. The good news is that vaccination can create immunity and protect you from this preventable disease.

Having no immunity to Hepatitis B does not cause symptoms. You only develop symptoms if you actually catch the virus. Many people with lack of immunity never know it until they get tested.

If you do become infected with Hepatitis B, symptoms may include:

• Yellowing of the skin and eyes, called jaundice
• Dark urine and pale stools
• Extreme tiredness that does not improve with rest
• Nausea, vomiting, and loss of appetite
• Pain in the upper right side of the abdomen
• Fever and joint pain
• Muscle aches throughout the body

Many people with acute Hepatitis B have no symptoms at all. This is especially true in children under age 5. Lack of symptoms does not mean lack of infection or liver damage.

Lack of immunity to Hepatitis B happens when you have never been vaccinated and never had the infection. The Hepatitis B vaccine became widely available in the 1980s. Many adults born before routine vaccination began may have no immunity. Some people were vaccinated but did not develop enough antibodies to stay protected.

Risk factors for lacking immunity include never completing the vaccine series, being born before vaccines were standard, and certain medical conditions that weaken immune response. People who work in healthcare, travel to areas where Hepatitis B is common, or have close contact with infected individuals face higher risk of infection if they lack immunity. Without antibodies, any exposure to infected blood or body fluids can lead to infection.

Testing for Hepatitis B immunity involves a simple blood test. The Hepatitis B Surface Antibody test checks whether you have protective antibodies in your blood. If antibodies are not detected, you lack immunity and should consider vaccination. This test is often done before starting certain jobs, traveling internationally, or during pregnancy screening.

Talk to a healthcare provider about testing your Hepatitis B immunity status. They can order the appropriate blood work and help you understand your results. If you lack immunity, your provider can start the vaccination series to protect you. Three doses given over six months provide long-lasting protection for most people.

Treatment for lack of immunity to Hepatitis B is straightforward. Get vaccinated. The Hepatitis B vaccine is safe and highly effective at creating immunity.

• Complete the full Hepatitis B vaccine series, usually three shots over six months
• Get tested after vaccination to confirm you developed antibodies
• Practice safe behaviors to avoid exposure while building immunity
• Avoid sharing needles, razors, toothbrushes, or other items that may have blood on them
• Use barrier protection during sexual contact
• Wash hands thoroughly after any potential exposure to blood
• Tell healthcare workers you lack immunity so they can take extra precautions during procedures
• Consider a booster dose if you were vaccinated long ago and antibody levels are low

If you are exposed to Hepatitis B before completing vaccination, see a doctor immediately. You may need Hepatitis B immune globulin, or HBIG, within 24 hours. This provides temporary protection while your body builds its own immunity from the vaccine.