These are usually mild and go away on their own. The most common side effects of the hepatitis B vaccine are mild and include:. Hepatitis B is a contagious liver disease caused by the hepatitis B virus. Acute hepatitis B refers to the first 6 months after someone is infected with the hepatitis B virus.
This infection can range from a very mild illness with few or no symptoms to a serious condition requiring hospitalization. Some people are able to fight the infection and clear the virus. Chronic hepatitis B refers to the infection when it remains active instead of getting better after 6 months. Over time, the infection can cause serious health problems, and even liver cancer. Infants and young children usually show no symptoms.
Hepatitis B infection causes. Hepatitis B can be very serious. Most people with a recent hepatitis B infection may feel sick for a few weeks to several months. Some people get over the illness. For other people, the virus infection remains active in their bodies for the rest of their life. According to the World Health Organization, there is no evidence of serious adverse events linked to hepatitis B vaccination. This includes the risk of a potentially life-threatening allergic reaction known as anaphylaxis.
Statistically, the risk of anaphylaxis among vaccine recipients is in the ballpark of 1. There are no well-controlled human studies assessing the safety of hepatitis B vaccines during pregnancy.
With that said, the potential benefits may warrant their use in pregnant women despite potential risks. Even so, it is important to speak with your healthcare provider to make an informed choice if you are pregnant, breastfeeding, or planning to get pregnant.
Still, it is important to advise your healthcare provider if you are on an immunosuppressive therapy of any sort. Such a treatment may in theory impair your body's ability to produce antibodies. Examples include:. Despite these concerns, there are no recommendations regarding the adjustment of dosages for people on any immunosuppressant drug or therapy.
Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Department of Health and Human Services. Viral hepatitis in the United States: data and trends. Updated June 7, Package insert - Engerix B. Updated Dynavax Technologies. Package insert - Heplisav-B. Package insert - Recombivax HB. Updated December Centers for Disease Control and Prevention.
Hepatitis B VIS. Updated August 15, Hepatitis B. Updated June 22, Recommendations of the Advisory Committee on Immunization Practices for use of a hepatitis B vaccine with a novel adjuvant. Package insert - Twinrix. Cangene bioPharma.
Package insert - HepaGam B. Updated January World Health Organization. Observed rate of vaccine reactions: hepatitis B vaccine. June Safety evaluation of adverse events following vaccination with Havrix, Engerix-B or Twinrix during pregnancy.
Your Privacy Rights. You may also call to speak to a registered nurse or pharmacist. Our nurses are available 24 hours a day, 7 days a week; and our pharmacists are available every night from p. The hepatitis B vaccine is given to protect people from getting the infection. In response to the vaccine, the body develops antibodies against hepatitis B virus HBV.
This response is known as active immunity. The hepatitis B vaccine is given as a series of 2, 3, or 4 shots injection in the upper arm or leg to provide long-lasting immunity. If the vaccination series is interrupted and the spacing between doses is longer than recommended, it is not necessary to start the series over or add more doses.
The series should be completed from where it was interrupted. A two-dose series is available for teens ages 11 to The time between the first and second shot should be at least 4 months. Hepatitis B virus causes a liver infection that can lead to serious complications, including liver cancer.
It is common in people throughout the world, particularly in Asia and sub-Saharan Africa. Pregnant women and other adults who do not have immunity and who have a high chance of exposure should be vaccinated. Healthy babies who weigh at least g 4.
When a baby receives the first dose varies by each province and territory. Babies who are born early premature or who weigh less than g 4. When the other 2 hepatitis B shots are given to babies depends on whether the mother has hepatitis B and the recommended immunization schedule in the province or territory where the baby was born. If you have questions about your baby's immunizations, talk with your doctor.
Anyone 18 years of age or younger who has not previously received the hepatitis B vaccine should get it. Children adopted from countries where HBV infection is common should be tested for hepatitis B and get shots if they are not immune. Adults who have not received the hepatitis B vaccine series should be immunized when they have an increased risk of exposure. Job, travel, health condition, or lifestyle all may increase a person's risk of contracting hepatitis B.
People who live or work where there is risk of exposure include:. People who have health conditions that put them at high risk for exposure or a severe infection include:. People whose lifestyle puts them at high risk for exposure include:.
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