How Often Hepatitis B Vaccine

Important Information About Vaccine And Hepatitis B Immunoglobulin Shot Administration

Where available, the hepatitis B birth-dose and HBIG should be administered within 24 hours of birth in order to prevent the transmission of hepatitis B from mother to child. It is very important that the shots be given in opposite limbs, to ensure the highest effectiveness. Please see chart above for more information.

Which Adults Should Be Vaccinated Against Hepatitis B

According to CDC recommendations, adults in the following groups are recommended to receive hepatitis B vaccine:

General

• All people age 18 years and younger.
• Anyone 19 years and older who wants to be protected from hepatitis B.

People at risk for infection by sexual exposure

• Sex partners of people who are hepatitis B surface antigen -positive.
• Sexually active people who are not in long-term, mutually monogamous relationships.
• People seeking evaluation or treatment for a sexually transmitted disease.
• Men who have sex with men.

People at risk for infection by percutaneous or permucosal exposure to blood or body fluids

• Current or recent illegal injection drug users.
• Household contacts of people who are HBsAg-positive.
• Residents and staff of facilities for developmentally challenged people.
• Healthcare and public safety workers with reasonably anticipated risk for exposure to blood or blood-contaminated body fluids.
• People with end-stage renal disease, including predialysis, hemo-, peritoneal- and home-dialysis patients.

Others

• International travelers to regions with intermediate or high levels of endemic HBV infection.
• People with chronic liver disease.
• People with HIV infection.
• People with diabetes who are age 19 through 59 years. For those age 60 and older, clinicians should make a determination of need for
• vaccination based on their patients’ situation.

In a future issue, we will review the various hepatitis B serologic tests, who needs testing, and when they need it .

How To Get Vaccinated Against Hepatitis B

All babies in the UK born on or after 1 August 2017 are given 3 doses of hepatitis B-containing vaccine as part of the NHS routine vaccination schedule.

These doses are given at 8, 12 and 16 weeks of age.

Babies at high risk of developing hepatitis B infection from infected mothers are given extra doses of the hepatitis B vaccine at birth, 4 weeks and 1 year of age.

If you think you’re at risk and need the hepatitis B vaccine, ask your GP to vaccinate you, or visit any sexual health or genitourinary medicine clinic.

If your job places you at risk of hepatitis B infection, it’s your employer’s responsibility to arrange vaccination for you, rather than your GP. Contact your occupational health department.

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Why Should I Vaccinate My Newborn Child If I Know That I Am Not Infected With Hepatitis B Virus

Before the hepatitis B vaccine, every year in the United States about 18,000 children were infected with hepatitis B virus by the time they were 10 years old. This statistic is especially important because people are much more likely to develop liver cancer or cirrhosis if they are infected early in life, rather than later in life .

About 9,000 of the 18,000 children infected in the first 10 years of life caught the virus from their mother during birth. However, many young children didn’t catch the disease from their mother. They caught it from either another family member or someone else who came in contact with the child. Because hepatitis B can be transmitted by relatively casual contact with items contaminated with the blood of an infected person, and because many people who are infected with hepatitis B virus don’t know that they have it, it is virtually impossible to be “careful enough” to avoid this infection.

For these reasons, all young children are recommended to receive the hepatitis B vaccine. The best time to receive the first dose is right after birth. This will ensure that the child will be protected as early as possible from catching hepatitis B from people who dont know that they are infected with the virus.

Listen to Dr. Offit explain why newborns get the hepatitis B vaccine by watching this short video, part of the series Talking About Vaccines with Dr. Paul Offit.

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:

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

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Who Should Not Receive The Hepatitis B Vaccine

Talk to your healthcare provider before getting the hepatitis B vaccine if:

• You have had a severe allergic reaction to the hepatitis B vaccine or any of its ingredients in the past.
• You have had an allergic reaction to yeast in the past.
• You are moderately or severely ill.
• You are currently taking immunosuppressive medications.

In addition, pregnant people should not receive the Heplisav-B or PreHevbrio vaccines until more safety information is available.

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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Hepatitis B Vaccination In Pregnancy

Hepatitis B infection in pregnant women may result in severe disease for the mother and chronic infection for the baby.

This is why the hepatitis B vaccine is recommended for pregnant women who are in a high-risk category.

There’s no evidence of any risk from vaccinating pregnant or breastfeeding women against hepatitis B.

And, as it’s an inactivated vaccine, the risk to the unborn baby is likely to be negligible .

Babies And Hepatitis B Vaccination

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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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.

International 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.

The hepatitis B vaccine is an injection that is generally given in the arm and as a three-dose series. The World Health Organization recommends a 0, 1, and 6-month vaccine schedule, though schedules may vary based on a countrys national immunization program. 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. Please note that the vaccine brand name, manufacturer and associated schedules for adults, children and infants may be unique to different countries, though there is a list of WHO prequalified vaccines.

3-Dose Vaccine Series for Infants

The World Health Organization recommends all infants receive the first dose of the hepatitis B vaccine within 24 hours of birth and to complete the vaccine series with additional shots at 1 month and 6 months of age. Beginning the hepatitis B vaccine at birth will ensure protection against hepatitis B for life.

3-Dose Vaccine Series for Children and Adults

4-Dose Combination Vaccine Series for Infants

Additional Resource Links:

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Routine Administration Schedule For Hepatitis B Vaccine In Adults

• The dosing schedule is 0, 1 to 2 months, and 4 to 6 months.
• There is some flexibility in the schedule, but be sure to keep in mind the minimum intervals between doses:
• At least four weeks between doses #1 and #2
• At least eight weeks between doses #2 and #3
• At least 16 weeks between doses #1 and #3
• If your patient falls behind on the hepatitis B vaccination schedule , continue vaccinating from where your patient left off. The series does NOT need to be restarted.

Why Is The Hepatitis B Vaccine Important

Because of the vaccine, cases of acute hepatitis B have decreased by a lot in the United States. But chronic hepatitis B is still common up to 2.2 million people in the United States have it. Chronic hepatitis B can lead to serious liver problems and even death.

Getting vaccinated is the best way to prevent hepatitis B.

Hepatitis B is a liver disease caused by a virus. There are 2 types of hepatitis B:

• Acute hepatitis B
• Chronic hepatitis B

Many children who get acute hepatitis B dont have any symptoms, but most adults do. Symptoms may include:

• Dark pee or clay-colored poop
• Pain in the muscles, joints, and stomach

Acute hepatitis B symptoms usually last a few weeks but they can last as long as 6 months.

If the acute hepatitis B infection does not go away after 6 months, its considered a chronic hepatitis B infection. Most people who have chronic hepatitis B dont have symptoms at first. But chronic hepatitis B is a lifelong illness that can lead to serious and possibly deadly liver problems, like:

• Has sex with a person who has hepatitis B
• Touches the blood or open sores of a person who has hepatitis B

All children and most adults need to get the hepatitis B vaccine.

Infants and children

All children need to get the hepatitis B vaccine as part of their routine vaccine schedule.

Children need 3 doses of the vaccine at the following ages:

• Birth for the first dose
• 1 through 2 months for the second dose
• 6 through 18 months for the third dose

Adults

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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.

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

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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.

Who Should Get The Vaccine

The Hepatitis B vaccine is recommended for all infants and children aged between 0 and 18. In the case of infants, it is recommended to take the vaccine at birth, while still in hospital. In cases where the vaccine was omitted at birth, its important to complete the 3-shot series as soon as possible. Adolescents and adults who havent received the vaccine on time are also recommended to complete the vaccination as soon as they can.

Members of the following at-risk groups should take special care to get vaccinated: healthcare workers, people in treatment for another STD, the partners and household members of individuals with HIV/AIDS, prison inmates, intravenous drug users , sexually active people who are not in exclusive relationships, men who engage in sex with other men, residents and staff of homes and facilities that care for the developmentally challenged, and people with serious kidney diseases .

Some US populations have a substantially higher rate of HBV infections. This includes Pacific Islanders, Alaska Natives, as well as immigrants and refugees from endangered territories and countries. People who belong to these endangered groups are highly advised to take the vaccine.

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How Is The Hepatitis B Vaccine Given

The hepatitis B vaccine is a “recombinant vaccine,” which means that it is a fragment of the hepatitis B virus that has been produced in a laboratory. The vaccination for hepatitis B is given as 3 injections over a 6-month period – an initial dose, followed by a second dose 1 month later, and a third dose 5months after the second.

If you need hepatitis A vaccination in addition to hepatitis B, you can do these individually or as a combined vaccine that covers both. The combination vaccine is given as 3 injections over a 6-month period – an initial dose, followed by a second dose 1 month later, and a third dose 5 months after the second.

If you are not able to get the shots on time, it is not necessary to restart the series, but you should continue from the last dose given.

You will NOT get hepatitis B from the vaccine.

You will be protected for about 13 years. If it has been many years since you received your hepatitis B vaccination, or if you do not know when you were vaccinated, ask your doctor to check to see if you have antibodies against hepatitis B.

How Is The Hepatitis B Vaccine Made

People are protected against hepatitis B virus infection by making an immune response to a protein that sits on the surface of the virus. When hepatitis B virus grows in the liver, an excess amount of this surface protein is made. The hepatitis B vaccine is made by taking the part of the virus that makes surface protein and putting it into yeast cells. The yeast cells then produce many copies of the protein that are subsequently used to make the vaccine. When the surface protein is given to children in the vaccine, their immune systems make an immune response that provides protection against infection with the hepatitis B virus.

The first hepatitis B vaccine was made in the 1980s by taking blood from people infected with hepatitis B virus and separating or purifying the surface protein from the infectious virus. Because blood was used, there was a risk of contaminating the vaccine with other viruses that might be found in blood, such as HIV. Although contamination with HIV was a theoretical risk of the early, blood-derived hepatitis B vaccine, no one ever got HIV from the hepatitis B vaccine. That is because the blood used to make vaccine was submitted to a series of chemical treatments that inactivated any possible contaminating viruses. Today, there is no risk of contaminating the vaccine with other viruses because the surface protein is manufactured in the laboratory.

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