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Old 10-18-2010, 05:52 PM
 
4,267 posts, read 6,166,336 times
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Quote:
Originally Posted by suzy_q2010 View Post
You assume that you know your family's and friends' medical history. Any of them could have it and not know it or know it and not share that fact with you.
Do you go around worrying about people with HIV? I don't. To me it's the same sort of thing. Tell me how an adult who is holding my baby would be able to pass Hep B on to them?
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Old 10-18-2010, 06:05 PM
 
Location: Foot of the Rockies
90,316 posts, read 120,355,293 times
Reputation: 35920
Quote:
Originally Posted by Dorthy View Post
You are implying that immunity goes past the age of 20 and so far there is no evidence of that.

<snip>

As far as this: I'm not implying anything. If I said they won't be protected, that would be different but I said, may not which means we don't know. I find it odd that you do know that protection lasts longer then 20 years when as of yet there is no evidence of this.
I did not say that I know that protection lasts longer than 20 years, nor did I imply it. Not one time. Never. Ever. You are accusing me of saying something I never said.
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Old 10-18-2010, 06:26 PM
 
707 posts, read 1,462,869 times
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If so many people are choosing not to vaccinate, I really am going to lock my daughter up in a bubble.
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Old 10-18-2010, 06:35 PM
 
3,484 posts, read 2,863,801 times
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Quote:
Originally Posted by cheerbaby112 View Post
If so many people are choosing not to vaccinate, I really am going to lock my daughter up in a bubble.
I'll bring my daughter and our newborn baby with you. There is no sensible argument against vaccinating for hep b as early as possible. Babies are very vulnerable to all kinds of vaccine preventable diseases. The sooner they get vaccinated the better.
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Old 10-18-2010, 07:11 PM
 
4,267 posts, read 6,166,336 times
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Quote:
Originally Posted by Katiana View Post
I did not say that I know that protection lasts longer than 20 years, nor did I imply it. Not one time. Never. Ever. You are accusing me of saying something I never said.
Apparently you consider "much of young adulthood" to mean 2 years then?
Quote:
Originally Posted by Katiana View Post
In the meantime, a person would be immune throughout adolescence and much of young adulthood.
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Old 10-18-2010, 07:30 PM
 
Location: Georgia, USA
36,992 posts, read 41,010,374 times
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Quote:
Originally Posted by Dorthy View Post
You are implying that immunity goes past the age of 20 and so far there is no evidence of that. You don't know if someone is protected after 20 years because the results of those studies have not been published yet.

How do you know?

We know that a healthy 20 year old who had been vaccinated as an infant would still be immune (most likely) at the age of 20 but we don't know anything beyond that. We are still waiting on the results of the studies. It is you who are implying things.

As far as this: I'm not implying anything. If I said they won't be protected, that would be different but I said, may not which means we don't know. I find it odd that you do know that protection lasts longer then 20 years when as of yet there is no evidence of this.
Actually, there is evidence of effectiveness up to 25 years: Elsevier

"The necessity to provide a booster dose was based on early projections of observed antibody levels. However, recent follow-up studies with up to 12 year observation, as well as studies employing mathematical models predict that following primary vaccination, antibodies will persist for at least 25 years."

"All available data on monovalent and combined hepatitis A and hepatitis B vaccines indicates that there is no support for a hepatitis A or hepatitis B booster when a complete primary vaccination course is offered to immunocompetent individuals."

In short, it appears that the hepatitis vaccines are still working even if measured antibody levels drop below what were thought to be protective. The body still "remembers" the antigen if re-exposed to it.

This article is 4 years old. Apparently we are not seeing a significant drop in protection in the people who were first vaccinated --- that would be 28 years ago --- even longer for those who were in trials.

So it is looking like the vaccine may provide lifelong immunity. That notion will be subject to change if new information becomes available.
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Old 10-18-2010, 07:38 PM
 
4,267 posts, read 6,166,336 times
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Quote:
Originally Posted by suzy_q2010 View Post
Actually, there is evidence of effectiveness up to 25 years: Elsevier

"The necessity to provide a booster dose was based on early projections of observed antibody levels. However, recent follow-up studies with up to 12 year observation, as well as studies employing mathematical models predict that following primary vaccination, antibodies will persist for at least 25 years."
It's a prediction.

Quote:
So it is looking like the vaccine may provide lifelong immunity. That notion will be subject to change if new information becomes available.
It may and it may not. We'll just have to wait and see.
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Old 10-18-2010, 07:39 PM
 
Location: Georgia, USA
36,992 posts, read 41,010,374 times
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Quote:
Originally Posted by Dorthy View Post
Do you go around worrying about people with HIV? I don't. To me it's the same sort of thing. Tell me how an adult who is holding my baby would be able to pass Hep B on to them?
See here: Hepatitis B Disease Questions and Answers

]HBV can also be spread during childhood. Most early childhood spread occurs in households of people with chronic (life-long) HBV infection, but the spread of HBV has also been seen in daycare centers and schools. The most likely way that the spread of HBV occurs during early childhood involves contact between an infected person's body fluids (e.g., their blood or drainage from their wounds or skin lesions) and breaks in the child's skin. HBV can be spread also when an HBV-infected person bites another person who is not infected. HBV can be spread also by an infected person pre-chewing food for babies, and through contact with HBV from sharing personal-care items, such as razors or toothbrushes. The virus remains infectious and capable of spreading infection for at least seven days outside the body. Virus can be found on objects, even in the absence of visible blood.[

It does not require close body contact. A towel contaminated with the virus could do it.
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Old 10-18-2010, 07:47 PM
 
707 posts, read 1,462,869 times
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Quote:
Originally Posted by Dorthy View Post
Do you go around worrying about people with HIV? I don't. To me it's the same sort of thing. Tell me how an adult who is holding my baby would be able to pass Hep B on to them?

Is it weird that I actually do go around worrying about HIV. If someone bleeds and I touch it Im concerned. So yes. Maybe Im paranoid?
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Old 10-18-2010, 07:49 PM
 
4,267 posts, read 6,166,336 times
Reputation: 3579
Quote:
Originally Posted by suzy_q2010 View Post
See here: Hepatitis B Disease Questions and Answers
HBV can also be spread during childhood. Most early childhood spread occurs in households of people with chronic (life-long) HBV infection, but the spread of HBV has also been seen in daycare centers and schools.
No one in my household has Hep B and I'm homeschooling so I think it's safe to say that our risk is pretty low.

Quote:
The most likely way that the spread of HBV occurs during early childhood involves contact between an infected person's body fluids (e.g., their blood or drainage from their wounds or skin lesions) and breaks in the child's skin.[/b]
So if a Hep B positive person bleeds on my child's open wound they could get Hep B. Not a very likely scenario.

Quote:
HBV can be spread also when an HBV-infected person bites another person who is not infected.
Not very likely either considering my child won't be in school or daycare. I know sometimes children bite each other but it's not all that common.

Quote:
HBV can be spread also by an infected person pre-chewing food for babies
Disgusting! No one will be pre-chewing food for my children!

Quote:
and through contact with HBV from sharing personal-care items, such as razors or toothbrushes.
My children won't start shaving anytime soon and the only people they might accidentally share a toothbrush with is someone else in the household and since no one else in the household has Hep B I think they will be ok.
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