Wednesday, September 21, 2022

What Is In The Hepatitis B Vaccine

Search Strategy And Selection Criteria

Hepatitis B Vaccine

The recommendations for the administration of booster doses of hepatitis A and hepatitis B formed the basis of the search. The literature cited in these articles was updated and expanded to include articles relevant to hepatitis A and B and travel. The following were searched: the PubMed database, World Health Organization and Centers for Disease Control and Prevention Web sites, current hepatitis recommendations, and relevant publications . Only articles written in English were included.

When To Delay Or Avoid Hepb Immunization

Doctors delay giving the vaccine to babies who weigh less than 4 pounds, 7 ounces at birth whose mothers do not have the virus in their blood. The baby will get the first dose at 1 month of age or when the baby is discharged from the hospital.

The vaccine is not recommended if your child:

  • is currently sick, although simple colds or other minor illnesses should not prevent immunization
  • had a serious allergic reaction after an earlier dose of the vaccine or is allergic to baker’s yeast

Hepatitis B Vaccine On The Nhs

A hepatitis B-containing vaccine is provided for all babies born in the UK on or after 1 August 2017. This is given as part of the 6-in-1 vaccine.

Hospitals, GP surgeries and sexual health or GUM clinics usually provide the hepatitis B vaccination free of charge for anyone at risk of infection.

GPs are not obliged to provide the hepatitis B vaccine on the NHS if you’re not thought to be at risk.

GPs may charge for the hepatitis B vaccine if you want it as a travel vaccine, or they may refer you to a travel clinic for a private vaccination. The current cost of the vaccine is around £50 a dose.

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Why Is The Hepb Vaccine Recommended

People who dont know they’re infected can spread the hepatitis B virus. So it cant be avoided just by being careful. That’s why health experts recommend that all babies get the vaccine right from birth.

The HepB injection usually creates long-term immunity. Most infants who get the HepB series are protected from hepatitis B infection beyond childhood, into their adult years.

Eliminating the risk of infection also decreases risk for cirrhosis of the liver, chronic liver disease, and liver cancer.

I Am A Healthcare Worker Who Did Not Develop Hepatitis B Antibodies After Immunization What Should I Do

A hard journey to a future free of hepatitis in Africa

Two versions of hepatitis B vaccine are available. One, called Heplisav-B, contains a novel adjuvant that was not present in previous versions used by adults . Some people did not respond to the older version hepatitis B vaccine. In fact, in a group of adults younger than 40 years of age who received two doses of the older version vaccine 75 of 100 were protected. Following the third dose, this number increased to 90 of 100. However, people older than 40 years of age were less likely to respond to the vaccine with increasing age. On the other hand, 90 to 100 of 100 adults 18 years of age and older respond to Heplisav-B, which was approved for use in 2018.

About 5-10 of every 100 children and adults younger than 40 years of age do not respond to the third dose of the hepatitis B vaccine. Some of these people will be recommended to get vaccinated again. About 5 of 100 people will still not respond after getting all recommended doses of both series. Note that children younger than 18 years of age cannot get Heplisav-B.

If the people who do not respond to vaccination are determined not to have chronic hepatitis B, they will be reliant on taking precautions to reduce the chance of exposure and relying on those around them for protection. In other words, these people will be reliant on herd immunity.

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General Information About Vaccination Outside The Us

In developing countries, the pentavalent vaccine, a combination 5-in-one vaccine that protects against five diseases, diphtheria, pertussis, tetanus, Hib and hepatitis B, may be given to babies more than 6 weeks of age, and can be given up to 1 year of age. The first dose is given at 6 weeks, and the second and third doses are given at 10 and 14 weeks of age. The pentavalent vaccine may be made available free of charge with the support of GAVI, the vaccine alliance. Check the GAVI country hub to see the resources and immunizations that may be available:

For babies born to mothers with hepatitis B, waiting for the first dose of the pentavalent vaccine is too late and will NOT protect the baby from vertical or horizontal transmission of hepatitis B. Babies born to a mother with hepatitis B have a greater than 90% chance of developing chronic hepatitis B if they are not properly treated at birth.

WHO recommends the hepatitis B vaccine within 24 hours of birth for ALL babies. Plan ahead and inquire about the availability and cost of the monovalent , birth dose of the vaccine, as it is not a GAVI provided immunization. This is particularly important to women who are positive for hepatitis B.

If you are unsure of your hepatitis B status, please be sure your doctor tests you for hepatitis B!

*WHO does not recommend a birth dose of HBIG, which may not be available in all countries. Talk to your doctor if you have questions.

Is It Okay To Get An Extra Dose Of Hepatitis B Vaccine

Yes. Although extra doses of vaccine are not recommended, you can think of the extra dose as another chance for the immune system to see the hepatitis B virus. A vaccine is not the only time the immune system will see the virus or bacteria contained in it. People may be exposed to the virus or bacteria at school or the store or when visiting family or friends. An extra dose of vaccine is like one more exposure, except the difference is that the virus or bacteria in any vaccine has been made safe, so it wont make you ill.

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How Do Doctors Test For Hepatitis B Immunity

Doctors may order a panel of blood tests to check if someone has HBV:

  • Hepatitis B surface antigen : This test looks for the presence of HBV in the blood by looking for antigens found on the virus. A positive result means that a person has HBV.
  • Hepatitis B surface antibody : This test can show if a person is immune and protected against HBV. A positive result indicates that the person has overcome a past HBV infection or it is the result of receiving the hepatitis B vaccine.
  • Hepatitis B core antibody : This test looks for another antibody in the HBV, but this one does not provide protection. A positive result indicates that a person had a past infection or currently has HBV.

Some people with certain risk factors for hepatitis B infection, such as those who inject drugs, pregnant people, and other populations, may require testing postvaccination to check their immunity.

How Common Is Hepatitis B

Hepatitis B vaccine for Grade 7 Students

One U.S. study following trends in hepatitis B infection over a three-year periodfound that 4.3% of the population had a past or present HBV infection.

Estimates suggest that about 240 million people around the world have chronic hepatitis B. Up to 1.89 million people in the United States have a chronic HBV infection.

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Hepatitis B Vaccination Schedule For Children And Infants

The Centers for Disease Control and Prevention recommends that babies and children receive three 0.5 milliliter doses of either Engerix-B or Recombivax HB, starting just after birth.

The current recommended hepatitis B vaccine schedule for children and infants is as follows:

Hepatitis B Vaccination Schedule for Infants and Children
Hepatitis B Vaccine Dose
3 618 months old

If your child is undergoing hemodialysis, your healthcare provider may recommend that they receive additional doses of the HBV vaccine.

What Hepatitis B Immunisation Involves

Full protection involves having 3 injections of the hepatitis B vaccine at the recommended intervals.

Babies born to mothers with hepatitis B infection will be given 6 doses of hepatitis B-containing vaccine to ensure long-lasting protection.

If you’re a healthcare worker or you have kidney failure, you’ll have a follow-up appointment to see if you have responded to the vaccine.

If you have been vaccinated by your employer’s occupational health service, you can request a blood test to see if you have responded to the vaccine.

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Hepatitis A And Hepatitis B Vaccine Dosing Information

Usual Adult Dose for Hepatitis B Prophylaxis:

Primary immunization: 1 mL IM in the deltoid area at 0, 1 and 6 months.Alternatively, a 4 dose schedule given on days 0, 7, and 21 to 30 followed by a booster at month 12 may be used.

Usual Adult Dose for Hepatitis A Prophylaxis:

Primary immunization: 1 mL IM in the deltoid area at 0, 1 and 6 months.Alternatively, a 4 dose schedule given on days 0, 7, and 21 to 30 followed by a booster at month 12 may be used.

Persons With Chronic Diseases

Hepatitis B vaccine reintroduced

Refer to Immunization of Persons with Chronic Diseases in Part 3 for additional general information about vaccination of people with chronic diseases.

Chronic renal disease and patients on dialysis

People with chronic renal disease may respond sub-optimally to HB vaccine and experience more rapid decline of anti-HBs titres, and are therefore recommended immunization with a higher vaccine dose. Individuals undergoing chronic dialysis are also at increased risk for HB infection. In people with chronic renal disease anti-HBs titre should be evaluated annually and booster doses using a higher vaccine dose should be given as necessary.

Neurologic disorders

People with conditions such as autism spectrum disorders or demyelinating disorders should receive all routinely recommended immunizations, including HB-containing vaccine.

Chronic liver disease

HB immunization is recommended for non-immune persons with chronic liver disease, including those infected with hepatitis C, because they are at risk of more severe disease if infection occurs. Vaccination should be completed early in the course of the disease, as the immune response to vaccine is suboptimal in advanced liver disease. Post-immunization serologic testing may be used to confirm vaccine response.

Non-malignant hematologic disorders

Persons with bleeding disorders and other people receiving repeated infusions of blood or blood products are considered to be at higher risk of contracting HB and should be offered HB vaccine.

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Us Children And Adult Hepatitis B Vaccine Schedules

*Please note that the first dose should be given as soon as possible. Additional doses require minimum time intervals between doses in order for the vaccine to be effective.

3-Dose Vaccine Series for Children and Adults

The hepatitis B vaccine is an injection that is generally given in the arm as a three-dose series on a 0, 1, and 6-month schedule. Alternative schedules may be considered, noting that a third dose at 6 months, meeting minimum intervals between doses, is needed for maximum, long-term protection. Completing the hepatitis B vaccine series, preferably beginning at birth, will ensure protection against hepatitis B, hepatitis delta and lower the lifetime risk of liver cancer. Greater than 90% of babies and up to 50% of young children who are not vaccinated and are infected with hepatitis B will have lifelong infection, which makes the birth dose essential to their protection.

There are four, 3-dose vaccine brands approved in the U.S.

  • PreHevbrio PreHevbrio is only approved for adults age 18 and over.

2-Dose Vaccine Series

Hepatitis B Vaccine: Canadian Immunization Guide

For health professionals

Last partial content update : May 2022

The footnotes in and the accompanying text description for the figure have been revised to align with the corresponding figure in Protocole d’immunisation du Québec, 5e édition from which it was adapted.

Last complete chapter revision :

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Who Should Not Get The Hepatitis B Vaccine

Hepatitis B is a safe vaccine that does not contain a live virus.

However, there are some circumstances in which doctors advise against getting the HBV vaccine.

You should not receive the hepatitis B vaccine if:

  • youve had a serious allergic reaction to a previous dose of the hepatitis B vaccine
  • you have a history of hypersensitivity to yeast or any other HBV vaccine components

Babies And Hepatitis B Vaccination

Hepatitis B Vaccine for Babies – Importance and Recommended Schedule

Pregnant women have a routine blood test for hepatitis B as part of their antenatal care.

Babies born to mothers infected with hepatitis B need to be given a dose of the hepatitis B vaccine within 24 hours of their birth, followed by further doses at 4, 8, 12 and 16 weeks of age, plus a final dose when they’re 1 year old.

Babies of mothers identified by the blood test as particularly infectious might also be given an injection of HBIG at birth on top of the hepatitis B vaccination to give them rapid protection against infection.

All babies born to mothers infected with hepatitis B should be tested at 1 year of age to check if they have become infected with the virus.

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Immunization With Hepatitis B Immunoglobulin

Machaira et al stated that the cost-effectiveness of augmenting immunization against hepatitis B infection with hepatitis B immune globulin remains controversial, particularly for the subpopulation of babies of HBsAg+/HBeAg- mothers that are considered as low-infective. These researchers evaluated the effectiveness of vaccine alone compared with vaccine plus HBIG for the immunization of babies of HBsAg+/HBeAg- mothers. They searched PubMed, Scopus and Cochrane Central Register of Controlled Trials databases to identify studies comparing the effectiveness of combined immunization with vaccine alone in neonates of HBsAg+/HBeAg- mothers. A systematic review and meta-analysis of eligible studies was performed. A total of 9 eligible studies were identified . No difference was found regarding the primary outcome of this meta-analysis, namely occurrence of hepatitis B infection, between neonates who received vaccine only, compared with those who received both vaccine and HBIG . This finding was consistent with regards to sero-protection rate . Safety data were not reported in the included studies. The authors concluded that available limited published evidence suggested that vaccine alone seems to be equally effective to the combination of HBIG and hepatitis B vaccine for neonates of HBsAg+/HBeAg- mothers in preventing infection. They stated that further studies are needed in order to clarify the potential benefit of combined immunization to this specific subgroup of patients.

Does The Hepatitis B Vaccine Have Side Effects

Some children will develop pain or soreness in the local area of the shot, and low-grade fever.

There is one extremely rare, but serious, side effect. About 1 out of every 600,000 doses of the hepatitis B vaccine will cause a severe allergic reaction, called anaphylaxis, with symptoms including swelling of the mouth, difficulty breathing, low blood pressure or shock. Anaphylaxis usually occurs within 15 minutes of receiving the vaccine. Although anaphylaxis can be treated, it is quite frightening. People should remain at the doctors office for about 15 minutes after getting the vaccine.

Although the hepatitis B vaccine is made in yeast cells, no one has ever been shown to be allergic to the yeast proteins contained in the hepatitis B vaccine .

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More Information On Side Effects

Reactions listed under âpossible side effectsâ or âadverse eventsâ on vaccine product information sheets may not all be directly linked to the vaccine. See Vaccine side effects and adverse reactions for more information on why this is the case.

If you are concerned about any reactions that occur after vaccination, consult your doctor. In the UK you can report suspected vaccine side effects to the Medicines and Healthcare products Regulatory Agency through the Yellow Card Scheme

Accelerated Us Children And Adult Hepatitis B Vaccine Schedules

Hepatitis b Virus Vaccine_Revac
*Please note that the first dose should be given as soon as possible. Additional doses require minimum time intervals between doses in order for the vaccine to be effective.

In some instances, it may be necessary to vaccinate within a short period of time to ensure protection before travel. There are accelerated schedules to provide the highest level of protection over a short period of time. Individuals who need an accelerated schedule must have a booster dose at 1 year to ensure long-term protection. Note that the 2-dose Heplisav-B vaccine will also ensure maximum protection over a 1-month period without the need for a booster dose at 1 year.

4-Dose Vaccine Series for Children and Adults

Engerix-B is a 3-dose vaccine that can be given on an accelerated, four-dose schedule, with 3 shots administered within 2 months, and a booster dose at 1 year to provide maximum long-term protection.

4-Dose Combination Hepatitis A and B Vaccine Series

Twinrix is a 4-dose vaccine that can be given on an accelerated schedule to provide protection against hepatitis A and B. Three doses are administered within 1 month, followed by a booster shot at 1 year. This is a common choice of vaccine for those travelling on short-notice outside the U.S. It is important to complete the booster dose at 1 year, to ensure long-term protection.

2-Dose Vaccine Series

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Facts About Hepatitis B

  • Two billion people, or one in three, have been infected with hepatitis B worldwide. Of these, almost 300 million live with chronic hepatitis B. This means about 1 of every 26 people throughout the world are living with a chronic hepatitis B infection.
  • Each year about 900,000 people die from hepatitis B worldwide, and about 2,000 of these deaths occur in the United States.
  • Hepatitis B is transmitted through blood and is 100 times more infectious than HIV. An estimated one billion infectious viruses are in one-fifth of a teaspoon of blood of an infected person, so exposure to even a very small amount, such as on a shared toothbrush, can cause infection.
  • Hepatitis B is sometimes referred to as the silent epidemic because most people who are infected do not experience any symptoms.
  • Liver cancer accounted for about 5% of cancer deaths in the U.S. during 2020.
  • Almost half of liver cancers are caused by chronic infection with hepatitis B.
  • The World Health Organization recommends the inclusion of hepatitis B vaccine in immunization programs of all countries in 2019, more than 8 of 10 infants born throughout the world received three doses of hepatitis B vaccine.

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