Hepatitis B Vaccine: What You Need to Know - HealthyChildren.org
Why get vaccinated?
Hepatitis B vaccine can prevent hepatitis B. Hepatitis B is a liver disease that can cause mild illness lasting a few weeks, or it can lead to a serious, lifelong illness.
Acute hepatitis B is a short-term illness that can lead to fever, fatigue, loss of appetite, nausea, vomiting, jaundice (yellow skin or eyes, dark urine, clay-colored bowel movements), and pain in the muscles, joints and stomach.
Chronic hepatitis B is a long-term illness that occurs when the hepatitis B virus remains in a person's body. Most people who go on to develop chronic hepatitis B do not have symptoms, but it is still very serious and can lead to liver damage (cirrhosis), liver cancer, and death. Chronically-infected people can spread hepatitis B virus to others, even if they do not feel or look sick themselves.
Hepatitis B is spread when blood, semen or other body fluid infected with the hepatitis B virus enters the body of a person who is not infected. People can become infected through:
Birth (if a pregnant person has hepatitis B, their baby can become infected)
Sharing items such as razors or toothbrushes with an infected person
Contact with the blood or open sores of an infected person
Sex with an infected partner
Sharing needles, syringes or other drug-injection equipment
Exposure to blood from needlesticks or other sharp instruments
Most people who are vaccinated with hepatitis B vaccine are immune for life.
Hepatitis B vaccine
Hepatitis B vaccine is usually given as 2, 3, or 4 shots.
Infants should get their first dose of hepatitis B vaccine at birth and will usually complete the series at 6–18 months of age. The birth dose of hepatitis B vaccine is an important part of preventing long-term illness in infants and the spread of hepatitis B in the United States.
Anyone 59 years of age or younger who has not yet gotten the vaccine should be vaccinated.
Hepatitis B vaccination is recommended for adults 60 years or older at increased risk of exposure to hepatitis B who were not vaccinated previously. Adults 60 years or older who are not at increased risk and were not vaccinated in the past may also be vaccinated.
Hepatitis B vaccine may be given as a stand-alone vaccine, or as part of a combination vaccine (a type of vaccine that combines more than one vaccine together into one shot).
Hepatitis B vaccine may be given at the same time as other vaccines.
Talk with your health care provider
Tell your vaccination provider if the person getting the vaccine:
Has had an allergic reaction after a previous dose of hepatitis B vaccine, or has any severe, life-threatening allergies
In some cases, your health care provider may decide to postpone hepatitis B vaccination until a future visit.
Pregnant or breastfeeding people should be vaccinated if they are at risk for getting hepatitis B. Pregnancy or breastfeeding are not reasons to avoid hepatitis B vaccination.
People with minor illnesses, such as a cold, may be vaccinated. People who are moderately or severely ill should usually wait until they recover before getting hepatitis B vaccine.
Your health care provider can give you more information.
Risks of a vaccine reaction
Soreness where the shot is given, fever, headache, and fatigue (feeling tired) can happen after hepatitis B vaccination.
People sometimes faint after medical procedures, including vaccination. Tell your provider if you feel dizzy or have vision changes or ringing in the ears.
As with any medicine, there is a very remote chance of a vaccine causing a severe allergic reaction, other serious injury or death.
What if there is a serious problem?
An allergic reaction could occur after the vaccinated person leaves the clinic. If you see signs of a severe allergic reaction (hives, swelling of the face and throat, difficulty breathing, a fast heartbeat, dizziness, or weakness), call 9-1-1 and get the person to the nearest hospital.
For other signs that concern you, call your health care provider.
Adverse reactions should be reported to the Vaccine Adverse Event Reporting System (VAERS). Your health care provider will usually file this report, or you can do it yourself. Visit the VAERS website or call 1-800-822-7967. VAERS is only for reporting reactions, and VAERS staff do not give medical advice.
The National Vaccine Injury Compensation Program
The National Vaccine Injury Compensation Program (VICP) is a federal program that was created to compensate people who may have been injured by certain vaccines. Claims regarding alleged injury or death due to vaccination have a time limit for filing, which may be as short as two years. Visit the VICP website at or call 1-800-338-2382 to learn about the program and about filing a claim.
How can I learn more?
The information contained on this Web site should not be used as a substitute for the medical care and advice of your pediatrician. There may be variations in treatment that your pediatrician may recommend based on individual facts and circumstances.
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