How long is the vaccine in your body?
The H1N1/09 vaccine is very quickly absorbed by your body and then it is up to your immune system to take it from there to develop a resistance to the particular strain of flu virus that was in the vaccination and your body will develop the antibodies to protect against future invasions of the same virus. The vaccine was only there long enough to trigger your immune system to begin to work on the immune process.
How long does immunity from a vaccine or having the flu last?
If you are asking, "How long will I remain protected against H1N1/09 from a vaccination or from getting sick with the flu?", then the answer to this is a little more difficult to give.
You will be protected for life against that exactstrain of the H1N1/09 virus that was contained in the vaccine or that you caught which caused you to be ill, and you will likely also have some cross-over protection from very similar strains.
However, viruses do mutate easily, and if later you are infected with another strain or mutation of the H1N1 virus, and if your immune system does not recognize it any longer because it has mutated to a different form, then you may have no immunity to that new strain. This is one reason we need to take annual vaccines for the rapidly mutating common seasonal flu strains.
See the related links section below for a link to an article on the Time/CNN Health and Science web site about this subject. Here is an excerpt from that article:
It turns out, however, that those antibodies [developed from a flu vaccine or from having the flu] - unlike those against illnesses like tetanus or whooping cough - can provide a formidable and life-long defense against the flu, as long as they're pitted against the correct strain. For an explanation, TIME asks Eric Altschuler, assistant professor of physical medicine and rehabilitation at the University of Medicine and Dentistry of New Jersey, and co-author of a recent paper in Nature about antibodies to the 1918 pandemic flu virus.
Q: How long do flu antibodies last?
A: According to our study, it appears they can last the entire lifespan of the human organism - 90 years plus...
More:
It's important to keep a record of vaccinations so the doctor knows when your child is due for a booster. Also make sure your child gets the seasonal flu vaccine each year. Having been immunized last year probably won't protect someone from getting the flu this year because flu viruses constantly change. That's why the vaccine is updated each year to include the most current common strains of the virus.
The flu vaccine reduces the average person's chances of catching the flu by up to 80% during the season. But because the flu vaccine doesn't prevent infection by all of the viruses that can cause flu-like symptoms, getting the vaccine isn't a guarantee that someone won't get sick during the flu season.
How long is the vaccine in your body?
The H1N1/09 vaccine is very quickly absorbed by your body and then it is up to your immune system to take it from there to develop a resistance to the particular strain of flu virus that was in the vaccination and your body will develop the antibodies to protect against future invasions of the same virus. The vaccine was only there long enough to trigger your immune system to begin to work on the immune process.
How long does immunity from a vaccine or having the flu last?
If you are asking, "How long will I remain protected against H1N1/09 from a vaccination or from getting sick with the flu?", then the answer to this is a little more difficult to give.
You will be protected for life against that exactstrain of the H1N1/09 virus that was contained in the vaccine or that you caught which caused you to be ill, and you will likely also have some cross-over protection from very similar strains.
However, viruses do mutate easily, and if later you are infected with another strain or mutation of the H1N1 virus, and if your immune system does not recognize it any longer because it has mutated to a different form, then you may have no immunity to that new strain. This is one reason we need to take annual vaccines for the rapidly mutating common seasonal flu strains.
See the related links section below for a link to an article on the Time/CNN Health and Science web site about this subject. Here is an excerpt from that article:
It turns out, however, that those antibodies [developed from a flu vaccine or from having the flu] - unlike those against illnesses like tetanus or whooping cough - can provide a formidable and life-long defense against the flu, as long as they're pitted against the correct strain. For an explanation, TIME asks Eric Altschuler, assistant professor of physical medicine and rehabilitation at the University of Medicine and Dentistry of New Jersey, and co-author of a recent paper in Nature about antibodies to the 1918 pandemic flu virus.
Q: How long do flu antibodies last?
A: According to our study, it appears they can last the entire lifespan of the human organism - 90 years plus...
More:
It's important to keep a record of vaccinations so the doctor knows when your child is due for a booster. Also make sure your child gets the seasonal flu vaccine each year. Having been immunized last year probably won't protect someone from getting the flu this year because flu viruses constantly change. That's why the vaccine is updated each year to include the most current common strains of the virus.
The flu vaccine reduces the average person's chances of catching the flu by up to 80% during the season. But because the flu vaccine doesn't prevent infection by all of the viruses that can cause flu-like symptoms, getting the vaccine isn't a guarantee that someone won't get sick during the flu season.
There are studies that suggest that over time the flu vaccines can lose some effectiveness. This is partially due to the original vaccine being less effective on mutated forms of the same virus. But for the same exact strain of H1N1 that is in the vaccine, and others that are very similar to it, many people do retain lifetime protection.
One of the ways new viruses are created is through mutation of existing viruses. If the H1N1/09 Pandemic Swine Flu virus mutates to a strain that our immune systems do not detect as the same, then the body would have to either be vaccinated with a new vaccine that includes the new strain, or develop new immunity naturally by infection.
That is true for almost all people who are immunized. Some people who have suppressed immune systems may not get full immunity. There is a less than 100% effectiveness rate for flu vaccines, but very close.
Immunity does not start immediately after getting vaccinated, though. For the swine flu A-H1N1/09 flu vaccine, healthy people over 9 only need a single dose and should have immunity 8 to 10 days after the vaccine. Children age 6 months through 9 years need two doses administered around a month apart. Protection should be achieved by two to three weeks after the second dose.
No. But if one acquires a communicable disease he gets life long immunity
Once someone has had a case of swine flu that is confirmed, then they will have lifetime immunity to the disease and not catch it again.
No, the H1N1 vaccine won't make you sicker or healthier if you already have H1N1.
the h1n1 vaccine does not work all the time
There have been several versions of H1N1 influenza over the years. But the most recent H1N1 flu was the pandemic "Swine Flu" A-H1N1/09. The monovalent (made with and for protection against a single virus) vaccine for it was made just before the flu season in fall/winter 2009-2010. Again, in the 2010-2011 flu season the same vaccine was included in the trivalent (made with three viruses) vaccine for the seasonal flu. If you had the monovalent vaccine in 2009, then you should still take the trivalent vaccine for the 2010 flu season. It will not hurt to get another dose of the H1N1/09 virus vaccine, it might enhance the immunity of some people, and you need to be vaccinated for the other two viruses that are most likely to be going around in this season.
I did...:(
You can take the vaccine but it will not stop the disease. Vaccinations prevent disease but they do not cure them.
No.
YES!
call your doctor and make an appointment, and tell them you need a an H1N1 vaccine
Yes. It is estimated to be effective in approximately 90% of people who get the vaccine. Some are unable to achieve immunity from vaccines due to an ineffective immune system or due to medicines they take. These are also included in this number, so it is slightly skewed for a real picture of the efficacy. Most healthy adults are completely safe from the A-H1N1 influenza within 2 weeks of the vaccination. As long as the virus does not mutate into a new form, this vaccine will work to prevent that specific kind of flu for the life of the person vaccinated.
No, only one time should provide immunity for life. However, in the US for the 2010-2011 flu season, the vaccine for swine flu H1N1/09 is included in the "regular" flu vaccinations. If you had it last year, it won't hurt to have it again.
No, the H1N1 virus does not contain carcinogens.