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.
Complications Of Hepatitis B Infection In Infants And Children
Mothers who are infected with hepatitis B can pass the virus to their baby at the time of birth. Hepatitis B virus can also be spread through exposure of broken skin or mucous membranes to the blood or other body fluids of an infected person.
Babies born to mothers with hepatitis B are recommended a dose of hepatitis B vaccine within 12 hours of birth as well as another medicine called hepatitis B immunoglobulin. These 2 injections provide extra protection for babies born to women living with hepatitis B.
Many people who are infected with hepatitis B have no symptoms. Babies and children who are infected with hepatitis B are less likely than adults to have symptoms of infection, but are more likely to develop chronic hepatitis B.
Symptoms of hepatitis B include:
- Fever
- Yellow skin and eyes
- Aching muscles or joints arthritis.
A child who contracts chronic hepatitis B has an increased risk of developing chronic liver disease and cancer later in life. A small proportion of adults who become infected with the hepatitis B virus develop chronic hepatitis B infection.
What Is Hepatitis A Vaccination
Type: Injectable
Inactivated Hepatitis A vaccine is a safe and highly effective option.
- Inactivated virus vaccine
- Inactivated combination vaccine* with hepatitis B
- Inactivated combination vaccine with typhoid
Contraindications: Hepatitis Acontaining vaccines should not be administered to travellers with a history of hypersensitivity to any vaccine component, including neomycin. The Inactivated combination vaccine* with hepatitis B should not be administered to people with a history of hypersensitivity to yeast.
The tip caps of prefilled syringes of certain inactivated virus vaccines, the vial stopper, syringe plunger stopper, and tip caps of certain inactivated virus vaccines may contain dry natural rubber, which may cause allergic reactions in latex-sensitive people.
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Hepatitis B Vaccine Schedule For Adults
Hepatitis B is a vaccine-preventable viral disease that involves inflammation of the liver.
The hepatitis B virus usually leads to a short-term infection known as acute hepatitis B. If their infection is left untreated, some people develop chronic hepatitis B. Chronic hepatitis B is a serious, permanent condition that can cause organ damage, cirrhosis , liver cancer, liver failure, and even death.
According to the Centers for Disease Control and Prevention , all people should be vaccinated against hepatitis B starting at birth. Adults who are at risk of developing hepatitis B should also receive the vaccine, which is highly effective in preventing infection.
Read on to learn more about the hepatitis B vaccine for adults, including who should receive it, the details of the dosage schedule, side effects, and more.
Postexposure Prophylaxis For Hepatitis A
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What are the current CDC guidelines for postexposure protection against hepatitis A?
Hepatitis A vaccine should be administered as soon as possible, within 2 weeks of exposure, to all unvaccinated people aged 12 months who have recently been exposed to hepatitis A virus . In addition to hepatitis A vaccine, co-administration of GamaSTAN S/D immune globulin is recommended under certain circumstances according to age and health status of the exposed person.
Should patrons of an establishment implicated in an outbreak of hepatitis A receive postexposure prophylaxis ?
Because common-source transmission to patrons is unlikely, PEP administration to patrons is typically not indicated. However, PEP may be considered for those patrons potentially exposed to a symptomatic food handler if a) the food handler directly handled uncooked or cooked foods without gloves AND had diarrhea or poor hygienic practices and b) the patron can be identified and treated within 2 weeks of exposure, though the risk to these patrons still remains low .
In settings in which repeated exposures to hepatitis A virus might have occurred , consideration of PEP use is warranted. PEP in this scenario should generally consist of vaccination for all age groups, though immune globulin may be considered for exposed people who are immunocompromised or have chronic liver disease.
What should be done when a case of hepatitis A is found in a setting providing services to children or adults ?
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Immunisation Against Hepatitis B For Children
Vaccination is the best protection against hepatitis B infection and is recommended for all infants and young children, adolescents and those in high-risk groups. Vaccination can be with a vaccine against hepatitis B alone or with a combination vaccine.
Protection against hepatitis B is available free of charge under the National Immunisation Program Schedule.
In Victoria, vaccination against hepatitis B is free for all babies and children including:
- Babies at birth vaccinate with hepatitis B vaccine as soon as possible after birth.
- Babies at 2, 4 and 6 months immunisation in the form of a diphtheria, tetanus, whooping cough, hepatitis B, polio and Haemophilus influenzae type b vaccine .
- Premature babies at 12 months premature babies born under 32 weeks gestation or under 2,000g birth weight receive a single booster dose.
- Children up to and including 20 years of age.
Common And Local Adverse Events
HA vaccine
HA vaccine is well tolerated. Reactions are generally mild and transient, and are usually limited to soreness and redness at the injection site. Other less frequent reactions include headache, irritability, malaise, fever, fatigue and gastrointestinal symptoms. Injection site reactions occur less frequently in children than in adults as do mild, systemic events . No significant difference in reactions is evident between initial and subsequent doses of vaccine or in the presence of pre-existing immunity.
HAHB vaccine
Refer to Hepatitis B Vaccine in Part 4 for information about HAHB vaccine.
Ig
Injection site reactions following receipt of standard human Ig include tenderness, erythema and stiffness of local muscles, which may persist for several hours. Mild fever or malaise may occasionally occur.
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Persons With Chronic Diseases
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
HA vaccine is recommended for people with chronic renal disease or undergoing dialysis if they are at increased risk of HA infection or severe HA . A study assessing the immune response of hemodialysis patients to standard doses of HA vaccine demonstrated a good HA antibody response and no serious adverse effects.
Chronic liver disease
HA immunization is recommended for susceptible persons with chronic liver disease, including those infected with hepatitis C and chronic HB carriers, 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.
Non-malignant hematologic disorders
Get The Shot And Stay Informed
The hepatitis A & B virus is silent but violent. The virus is 50 to 100 times more contagious than HIV and can survive outside the body for at least seven days, making it much more infectious then most infectious diseases.
Nobody is immune to the first infection, and once contracted, it can lead to chronic illness and, in extreme cases, even death.
We hope this article answered the question, “How long does Twinrix last?” Also, that it has given you further insight into hepatitis A and B.
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Who Should Get Screened For Hepatitis B
The U.S. Centers for Disease Control calls for HBV screening of all foreign-born persons from regions where hepatitis B is common regardless of their vaccination history.
Additionally, all pregnant women should be screened for HBV at an early prenatal visit during each pregnancy, even if they have been previously tested or vaccinated.
Other groups recommended for HBV screening include:
- Anyone seeking protection from the HBV infection
- Healthcare and public safety workers
- Household, sex, or needle-sharing contacts of persons infected with HBV
- Intravenous drug users
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What To Do If You Miss A Scheduled Dose
The recommended schedule for the HBV vaccine follows a three-dose pattern, with all doses complete within 6 months. The good news is that if you miss a dose, you dont need to start the series of shots all over.
If you missed getting the second dose 1 month after the first, make an appointment as soon as possible. If you miss the third dose, you should also try to get it as quickly as possible. Keep in mind that the second and third doses
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Risk Assessment For Travelers
The level of risk of infection with HAV or HBV for travelers depends on several factors, including the disease endemicity in the travel destination, the duration and frequency of travel, the activities to be undertaken, and the purpose of the travel . Travelers who remain in an area of high endemicity for extended periods are likely to be at higher risk of exposure to hepatitis A and/or hepatitis B than are those who take short trips. This is also true for those who travel frequently, but for shorter periods, to countries of endemicity, who may be at a cumulative lifetime risk.
The type of traveler is also an important factor, with backpackers generally having a higher probability of exposure to infection with HAV and/or HBV than business travelers and, thus, being at increased risk. The risk behavior profile of the traveler should be considered, with sexual promiscuity, , acupuncture, body piercing, tattooing, and adventure sports considered to be high-risk activities in terms of potential exposure to infection.
The importance of preventing hepatitis A and B in traveling children should be emphasized. Although HAV infection is usually asymptomatic in younger children, this population plays an important role in the transmission of HAV through importation of disease and subsequent transmission in nursery settings . For hepatitis B, the risk of developing chronic infection is higher for children who are infected at birth than for those who are infected at an older age .
Transmission Symptoms And Treatment
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How is HBV transmitted?
HBV is transmitted through activities that involve percutaneous or mucosal contact with infectious blood or body fluids , including
- sex with a partner who has HBV infection
- injection drug use that involves sharing needles, syringes, or drug-preparation equipment
- birth to a person who has HBV infection
- contact with blood from or open sores on a person who has HBV infection
- exposures to needle sticks or sharp instruments and
- sharing certain items with a person who has HBV infection that can break the skin or mucous membranes , potentially resulting in exposure to blood.
How long does HBV survive outside the body?
HBV can survive outside the body and remains infectious for at least 7 days .
What should be used to clean environmental surfaces potentially contaminated with HBV?
Any blood spills should be disinfected using a 1:10 dilution of one part household bleach to 9 parts water. Gloves should be worn when cleaning up any blood spills.
Who is at risk for HBV infection?
The following populations are at increased risk for becoming infected with HBV:
- Infants born to people with HBV infection
- Sex partners of people with HBV infection
- Men who have sex with men
- People who inject drugs
- Household contacts or sexual partners of known people with chronic HBV infection
- Health care and public safety workers at risk for occupational exposure to blood or blood-contaminated body fluids
- Patients on hemodialysis
Who should be screened for HBV?
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Side Effects Of Hepatitis B Vaccines
Immunisations containing components to protect against hepatitis B are effective and safe, although all medication can have unwanted side effects.
Side effects from the vaccine are uncommon and usually mild, but may include:
- Localised pain, redness and swelling at the injection site.
- Low-grade temperature .
- In children being unsettled, irritable, tearful, generally unhappy, drowsy and tired.
- Occasionally, an injection-site lump that may last many weeks, but for which treatment is not needed.
Who Should Get The Hepatitis A Vaccine
The CDC recommends that all children between ages 12 months and 23 months get this vaccine as well as for any infant aged 6 to 11 months who is traveling internationally.
The following people are also at risk for the disease and should be vaccinated:
- Children and teens through age 18 who live in states or communities that have made this vaccination routine because of a high rate of disease
- Men who have sex with men
- Anyone who uses illegal drugs
- People with chronic liver disease
- Anyone treated with blood clotting drugs, such as people with hemophilia
- People who work with HAV-infected primates or in HAV research laboratories.
- Travelers to countries where hepatitis A is common. A good source to check is the CDCâs travelersâ health website, which you can search by the country youâre going to.
- People adopting or close to a child adopted from a country where hepatitis A is common
You should not get the vaccine if you’re allergic to any ingredients in it or if you had a severe allergic reaction to an earlier dose of it. Tell your doctor or pharmacist about any allergies you have.
If you’re pregnant, let your doctor know. The safety of this vaccine for pregnant women is unknown, although the risk is considered to be very low.
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How Do Doctors Treat Hepatitis B
Doctors typically dont treat hepatitis B unless it becomes chronic. Doctors may treat chronic hepatitis B with antiviral medicines that attack the virus.
Not everyone with chronic hepatitis B needs treatment. If blood tests show that hepatitis B could be damaging a persons liver, a doctor may prescribe antiviral medicines to lower the chances of liver damage and complications.
Medicines that you take by mouth include
A medicine that doctors can give as a shot is peginterferon alfa-2a .
The length of treatment varies. Hepatitis B medicines may cause side effects. Talk with your doctor about the side effects of treatment. Tell your doctor before taking any other prescription or over-the-counter medicines.
For safety reasons, you also should talk with your doctor before using dietary supplements, such as vitamins, or any complementary or alternative medicines or medical practices.
Who Is Allowed To Have The Vaccine
The vaccination is routinely available to children as part of the NHS 6-in-1 vaccine schedule from birth at 8, 12 and 16 weeks of age.
Although the risk of infection is low in the UK, the virus persists for longer in children than it does adults so to avoid complications such as scarring and even liver cancer theyve given the vaccine.
Other high risk groups of people offered the vaccine include:
close family or sexual partners of someone with hepatitis B male and female sex workers people with any form of chronic liver disease people who inject drugs or have a partner who injects drugs babies born to infected mothers people who change their sexual partners frequently men who have sex with men anyone who receives regular blood transfusions or blood products, and their carers people with chronic kidney disease people who work somewhere that places them at risk of contact with blood or body fluids, such as nurses, prison staff, doctors, dentists and laboratory staff people travelling to high-risk countries prisoners families adopting or fostering children from high-risk countries
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Assessment Of Hbv Immune Status
Immunity to HBV is acquired from a resolved infection or from vaccination .2). The HBV vaccine has been shown to induce protective immunity in 90% to 95% of vaccinees. Most vaccinees will have protective levels of anti-HBs for five to 10 years after vaccination, although the exact duration of immunity remains undefined. When anti-HBs levels have waned below the protective threshold of 10 mIU/mL, a booster dose of HBV vaccine has been shown to induce a strong anamnestic immune response in such individuals. It is therefore probable that protection from chronic HBV infection may last for decades and may well be lifelong .
Investigation of hepatitis B virus immunity. Anti-HBc-Total Total antibody to hepatitis B core protein Anti-HBs/HBsAb Antibody to hepatitis B surface antigen
The HBV immune status can be determined using the tests outlined below, but testing for vaccine immunity in the general population is not indicated unless the individual is at high risk of infection .3). Nonimmune individuals should be offered HBV vaccination where clinically appropriate.
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.
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