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Doctor insights on: How Long Does The Hepatitis B Vaccine Last

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How long does the Hepatitis B vaccine last & if you get the vaccine does that make you 100% immune from getting Hep B?

How long does the Hepatitis B vaccine last & if you get the vaccine does that make you 100% immune from getting Hep B?

Nothing is 100%: The vaccine for Hep B is about 90% effective. It is thought to last as long as 22 years. That being said, it covers all subtypes of Hep B and is worth getting for everyone. Remember, you don't have to have sex with or share needles with an infected person to get Hep B. ...Read more

Dr. Mark Diamond
1,098 Doctors shared insights

Vaccinations (Definition)

Latin word for cow, vacca, because of the smallpox/cowpox work of edward jenner, vaccination is the administration of a substance, live organism or otherwise, that stimulates the immune response to prevent a specific disease. Primarily a preventative procedure, some vaccines can ...Read more


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How long does the hepatitis b vaccine stay in your baby?

How long does the hepatitis b vaccine stay in your baby?

Hep B vaccine: Hepatitis b vaccine is supposed to confer lifelong immunity so your baby should be protected. ...Read more

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How long does the hepatitis b vaccine itself stay inside your body?

How long does the hepatitis b vaccine itself stay inside your body?

Interesting?: The substance injected probably last a few weeks at most. But the response brought about by the vaccine series (all 3 shots) may last forever. I ugh eat checking titters after vaccination in high-risk patients then checking levels again every ten years. Boosters given if needed. ...Read more

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Normally, how long would the hepatitis b vaccine stay in your body?

Normally, how long would the hepatitis b vaccine stay in your body?

Good question: When someone gets vaccinated against hepatitis b, we can measure the level of antibodies produced. This gives us a sense of how protected people are. But, other kinds of immune cells (t cells) are also important in preventing chronic infection and we do not measure those. So protection probably lasts longer than ab do, but if you have an exposure, get tested for ab and boosted if levels are low. ...Read more

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How long could hepatitis b vaccine stay in your system?

Unclear.: If you are asking how long the vaccine is effective for, the three dose regimen can last a lifetime. ...Read more

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Does my baby really need the hepatitis b vaccine, living in a typical suburb in the u.S.?

Does my baby really need the hepatitis b vaccine, living in a typical suburb in the u.S.?

Lifetime protection: Years ago they targeted risk groups for the vaccine & it made no dent in the hep b in the country. In hawaii where it sometimes passed mom to baby, they started giving it to all babies & started to see a drop at all ages. Use in infants protects them for a lifetime, no mater what type of lifestyle or exposures they have. I have seen a 9mo with hep b chronic hepatitis/failure & it wasn't pretty. ...Read more

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Can the hepatitis b vaccine ever expire?

Confusing question: The material we stock at the office does have an expiration date, otherwise known as a use before date. I sense that is not your question. If you complete the series of Hepatitis B Vaccine it is thought to confer lifelong immunity unless you suffer some form of immune altering illness or treatment in the future. ...Read more

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What is in the hepatitis b vaccine? How does it work?

What is in the hepatitis b vaccine? How does it work?

Proteins: It works by including one of the viral surface proteins. This causes one's immune system to react and create protective antibodies for the hepatitis b virus. It takes several of the vaccines to get the adequate amount of antibody necessary to protect from disease. Great Question! ...Read more

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Is it ok to take the hepatitis b vaccine series twice?

Is it ok to take the hepatitis b vaccine series twice?

Yes: Small percentage of people do not develop adequate response to the hepatitis b vaccine, even after three doses. They can get another series of vaccination especially if affected individuals are at high risk to get infected with hepatitis b. ...Read more

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Is it thought of as dangerous to take the hepatitis b vaccine twice?

Possibly: Only should take if your immunity is proven to be low by a serum titer.
Patients with multiple sclerosis may develope an exacerbation secondary to the components in the the hepatitis b vaccine. ...Read more

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Is the hepatitis b vaccine effective for life?

Is the hepatitis b vaccine effective for life?

Maybe not: The Hepatitis B Vaccine is 2-3 shots. Some people may have protective antibodies for life, but many people's antibodies decrease as time goes by. Any person at high risk of contact with blood should get his antibody level checked, and get booster shots if his level is low. High risk persons include anyone with a household member who carries hepatitis b, healthcare workers, first responders, etc... ...Read more

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What would happen if a hepatitis B patient got the hepatitis b vaccine?

What would happen if a hepatitis B patient got the hepatitis b vaccine?

Nothing special: The vaccine is a synthetic replica of hep B antigens and is designed to help the body develop Hep B antibodies without experiencing the disease. Since they will already have hep B antibodies from thee prior illness, the vaccine at most could provide a small boost in antibody level. However, this has no effect on any existing hep B problem. ...Read more

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Does the hepatitis b vaccine ever require booster?

Does the hepatitis b vaccine ever require booster?

Hepatitis b vaccine: No booster doses are routinely recommended at this time. ...Read more

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What year did the hepatitis b vaccine become required for children?

What year did the hepatitis b vaccine become required for children?

Varies: Each state decides the required vaccines for day care/school or public university attendance. Actual state requirements for hep B vaccine varies from 1993 to well into the 2000's. ...Read more

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Will the hepatitis b vaccine raise my child's risk of developing ms?

Will the hepatitis b vaccine raise my child's risk of developing ms?

No: Ms is more common in people who live their childhood years farther away from the equator, which in the northern hemisphere means that a child's risk of MS increases if he moves farther north and lives there before adolescence. Ms occurs in people who do not get the hepatitis b vaccine, as well as in persons who do receive the vaccine, but one does not cause the other. The cause of MS is unknown. ...Read more

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What does it mean when you get the hepatitis b vaccine (all 3 series) but titer still shows no immunity?

What does it mean when you get the hepatitis b vaccine (all 3 series) but titer still shows no immunity?

Nonresponder?: People who do not mount immune response following a primary 3 dose series should have the entire series repeated. Inappropriate dose /admininistration, chronic disease and habits can can cause this. ...Read more

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What is the minimum needle length that is recommended for administering the hepatitis B vaccine to a 130 lb adult?

What is the minimum needle length that is recommended for administering the hepatitis B vaccine to a 130 lb adult?

Needle length: Hepatitis B is given as an intramuscular injection. Minimum needle length recommended for administering the Hepatitis B vaccine to a 130 lb adult is 5/8" to 1". Reference Immunization Action Coalition http://www. Immunize. Org/catg. D/p3085.pdf ...Read more

Dr. Mark Diamond
1,091 Doctors shared insights

Immunization (Definition)

The body is artificially exposed to a dead or weakened organism of a type able to cause disease. The body fights the organism and learns to protect itself, so disease will not develop if exposed to ...Read more


Dr. Deborah Lim
91 Doctors shared insights

Hepatitis B Vaccine (Definition)

The hepatitis B vaccine protects against hepatitis B, a serious viral disease that damages the liver. This vaccine is one of the recommended childhood immunizations, but many adults also ...Read more