Saturday, November 26, 2022

Hepatitis B Vaccine How Many Doses

How Do You Catch Hepatitis B Virus

Ending hepatitis B with crucial birth dose vaccine

Blood from a person infected with hepatitis B virus is heavily contaminated with the virus. As a result, contact with blood is the most likely way to catch hepatitis B. Even casual contact with the blood of someone who is infected can cause infection.

Healthcare workers are at high risk of catching the disease, as are intravenous drug users and newborns of mothers infected with the virus. Sexual contact can also expose people to infection. The virus is also present in low levels in saliva.

What Are Side Effects Of Inactivated Viral Vaccines

Side effects of inactivated viral vaccines may include the following:

  • Injection site reactions include:
  • Triggering of shingles in pre-exposed individuals
  • Precipitation or aggravation of autoimmune disorders such as multiple sclerosis
  • Information contained herein is not intended to cover all possible side effects, precautions, warnings, drug interactions, allergic reactions, or adverse effects. Check with your doctor or pharmacist to make sure these drugs do not cause any harm when you take them along with other medicines. Never stop taking your medication and never change your dose or frequency without consulting your doctor.

    What Other Drugs Interact With Hepatitis B Vaccine

    If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider, or pharmacist first.

    • Severe Interactions of Hepatitis B Vaccine include:
  • Hepatitis B Vaccine has serious interactions with at least 37 different drugs.
  • Moderate Interactions of Hepatitis B Vaccine include:
  • This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns, or for more information about this medicine.

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    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.

    Why Do You Need A Hepatitis B Shot

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    Hepatitis B is a viral infection that cant be transferred person-to-person unless you have contact with an infected persons bodily fluids. Annual infection rates of HBV are going down in the United States thanks to vaccines. So you might be wondering if you or your child needs a shot to protect against hepatitis B.

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    A Look At Each Vaccine: Hepatitis B Vaccine

    View larger image The hepatitis B vaccine is given to prevent the severe liver disease that can develop when children or adults are infected with hepatitis B virus. The hepatitis B vaccine is given as a series of three shots. The first dose is given within 24 hours of birth. The second dose is given one to two months after the first dose, and the third dose is given between 6 months and 18 months of age. The vaccine is also recommended for those up to 60 years of age who have not previously received it and those 60 years and older who are at increased risk or who simply want the protection afforded by vaccination.

    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.

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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.

    Persons With Chronic Diseases

    How many hepatitis vaccines are there? | Dr. Vachan S Hukkeri | CARE Hospitals

    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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    Many People With Hbv Dont Know They Have It

    HBV infections are becoming less common in the United States. But HBV is still widespread in other parts of the world. Around 257 million people living around the world currently have HBV, and many of them dont know it. Chronic HBV is often asymptomatic, and even when it isnt, it can take months for symptoms to show up.

    HBV can be transmitted through sexual contact and the use of IV drugs , and other risk factors. Although rare, there

    Infants Born To Mothers Who Have Hepatitis B: 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.

    Protecting Your Baby

    Infants born to women with hepatitis B must receive accurate doses of hepatitis B vaccine and hepatitis B immune globulin to ensure complete protection. In order to protect these infants, medications should be given immediately after birth in the delivery room or within the first 12-24 hours of life*.

    * See Testing and Treatment During Pregnancy section for details. Please note that testing of all pregnant women for hepatitis B is a global recommendation.

    3-Dose Vaccine Series for Infants

    The World Health Organization recommends that infants born to hepatitis B positive mothers receive the first dose of the hepatitis B vaccine within 24 hours of birth, and ideally a dose of hepatitis B immunoglobulin . These shots must be followed by the additional vaccine doses given on the recommended schedule. In the U.S., infants should follow a 1 month and 6-month schedule for the additional two doses.

    4-Dose Combination Vaccine Series for Infants

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    Emergency Hepatitis B Vaccination

    If you have been exposed to the hepatitis B virus and have not been vaccinated before, you should get immediate medical advice, as you may benefit from having the hepatitis B vaccine.

    In some situations, you may also need to have an injection of antibodies, called specific hepatitis B immunoglobulin , along with the hepatitis B vaccine.

    HBIG should ideally be given within 48 hours, but you can still have it up to a week after exposure.

    General Information About Vaccination Outside The Us

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    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.

    Page updated September 2022.

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    Does Hepatitis B Go Away

    In most cases, hepatitis B goes away on its own. You can relieve your symptoms at home by resting, eating healthy foods, drinking plenty of water, and avoiding alcohol and drugs. Also, find out from your doctor what medicines and herbal products to avoid, because some can make liver damage caused by hepatitis B worse.

    Accelerated 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.

    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

    Additional Resource Links:

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    Persons New To Canada

    Health care providers who see persons newly arrived in Canada should review the immunization status and update immunization for these individuals, as necessary. In many countries outside of Canada, HB vaccine is in limited use.

    All persons from a country that is endemic for HB should be assessed and vaccinated against HB if not immune and not infected. Individuals born in developing countries are more likely to be carriers of HB, necessitating vaccination of their sexual and household contacts based on review of their serologic test results. HB vaccine is recommended for all household contacts whose families have immigrated to Canada from areas in which there is a high prevalence of HB and who may be exposed to HB carriers through their extended families or when visiting their country of origin.

    Children adopted from countries in which there is a high prevalence of HB infection should be screened for HBsAg and, if positive, household or close contacts in the adopting family should be immunized before adoption or as soon as possible thereafter. Adults going to pick-up children from these countries should be vaccinated before departure. Refer to Immunization of Persons New to Canada in Part 3 for additional information.

    Other Reported Adverse Events And Conditions

    Health ministry unveils 1.7 million doses of Hepatitis B vaccine

    While serious events and chronic illnesses such as chronic fatigue syndrome, multiple sclerosis, Guillain-Barré syndrome, rheumatoid arthritis and sudden infant death syndrome have been alleged or reported following HB vaccination, no evidence of a causal association has been demonstrated in a number of studies.

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    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.

    What Are Dosages Of Hepatitis B Vaccine

    Dosages of Hepatitis B Vaccine:

    Intramuscular suspension

    Intramuscular suspension

    Dosage Considerations Should be Given as Follows:

    • Engerix B: 1 mL intramuscularly at 0, 1, and 6 months
    • Recombivax HB: 1 mL intramuscularly at 0, 1, and 6 months
    • Adults receiving dialysis or other immunocompromising conditions
    • Recombivax HB : 40 mcg intramuscularly at 0, 1, and 6 months, OR
    • Engerix-B : 40 mcg intramuscularly at 0, 1, and 6 months

    Routine vaccination

    Catch-up vaccination

    • Unvaccinated children should complete a 3-dose series
    • Children aged 11-15 years: 2-dose series of adult formulation Recombivax HB is licensed for use in children aged 11 through 15 years

    Dosing Considerations

    Administration

    Pediatric:

    • Administer in deltoid muscle for older children and adolescents anterolateral thigh preferred for neonates/infants/small children
    • Do not give intravenously/intradermal

    Suspected adverse events after administration of any vaccine may be reported to Vaccine Adverse Events Reporting System , 1-800-822-7967

    This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.

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    How Do Inactivated Viral Vaccines Work

    Inactivated viralvaccines are sterile biologic products that provide immunity against viral infections. Inactivated viral vaccines work by stimulating the bodys immune system to produce antibodies against specific types of viruses, and protect a person from becoming infected when exposed to these viruses.

    In the case of SARS-CoV-2 coronavirus that causes respiratory illness and has led to the COVID-19 pandemic, vaccines do not entirely prevent infection but protect vaccinated individuals from serious illness and hospitalization from the disease.

    Inactivated viral vaccines contain particles of proteins or genetic material from viruses. Inactivated viral vaccines may also contain substances that preserve and stabilize the vaccine, and enhance immune response. Some viral vaccines are delivered in inactivated harmless viruses such as human adenovirus.

    Inactivated viral vaccines may be made from:

    • Surface proteins of the viruses enable the virus to hold on to a human cell, enter inside and replicate.
    • Modified RNA particles from the virus can enter host cells and induce the production of viral antigen, which stimulates an immune response from the body.
    • Recombined DNA material from multiple strains and subtypes of viruses, killed to eliminate disease-causing capability.

    Currently, inactivated viral vaccines approved by the FDA protect against viral infectious diseases that include:

    • Coronavirus disease , caused by SARS-Cov-2 virus
  • Routine poliovirus vaccine prophylaxis
  • Adults

    Who Should Receive The Hepatitis B Vaccine

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    For most people, the hepatitis B vaccine is safe and effective. About 90% of people who receive three vaccine doses are protected against hepatitis B for over 30 years.

    The CDC’s Advisory Committee on Immunization Practices recommends the hepatitis B vaccine for the following groups:

    • All babies, starting just after birth
    • Children and adolescents under 19 years old
    • Adults ages 1959 who have not previously completed vaccination
    • Adults ages 60 and over with a high risk of contracting HBV

    Adults ages 60 and over who do not have any hepatitis B risk factors can receive the hepatitis B vaccine, but it is optional.

    Hepatitis B spreads when the bodily fluids of an infected person enter another person’s body. Sexual contact is one way it can be spread. A person with HBV can spread it to their baby during childbirth. Other ways in which HBV may be transmitted include:

    • Sharing medical equipment, whether at home or in a hospital setting, with a person who has an HBV infection
    • Sharing syringes with a person who has hepatitis B, such as during injection drug use or at-home piercing or tattooing
    • Sharing personal items, such as razors or toothbrushes, with someone who has hepatitis B
    • Coming into contact with the sores or blood of a person who has hepatitis B

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