do vaccines really last for a life time?

Question

do vaccines really last for a life time? i mean like if i got a vaccaine in 1993 against a certain virus, am i still immune to that virus after all these years?

im referring to Hepititus B vaccine

Answer 1

yeah your immune system remembers it forever, however that virus might have and probably have evolved and you need a shot for that new virus strand.

Answer 2

Yes and No! Your immune system will remember the virus, but the level of protection agiants the virus wears-off over time. You do not have the same level of protection lets say againts tetanus, as you would in the first few years right after vaccination. That is the reason why we give booster tetanus shots after someone steps on a rusty nail. In the US you don't experience too much booster shots, but if you go traveling abroad your doctor will re vaccinate you for added protection.

Answer 3

It really depends on what type of vaccine you have gotten. Some you have to get several times in your life. But NO vaccine is 100% effective. Even if you get a vaccine that is suppose to last a lifetime it is still possible for you to get that virus/disease.

Answer 4

No. A couple do (like the polio tablet/vaccine) but others, you have to get topped up - for instance Tetanus only lasts 10 years. Others wane off over time. If you're going overseas - talk to your GP about vaccines, which is very important.
Also, if you have had chicken pox, then you are immune for life. It really depends on the disease.

Answer 5

If you had the full series of shots for the virus. You can go to the doctor and have your antibody levels tested to make sure that you are still immune. If you aren't you just have to get re-vaccinated.

Answer 6

Well, I've been told by the doctors that depending on what it is you've been vaccinated for, determine's how long the vaccine lasts. Flu shots are good for about a year, while a tetnis shot can last you for about 10 years. You could ask you doctor.

Answer 7

Not necessarily.

I took the series of 3 Hep B injections when I went to Central AMerica Once, then when I went into a healthcare profession 10 years later, my blood didn't have any antibodies for Hep B (the titer) anymore, so I needed the series all over again. I'm guessing that had I been exposed to Hep B, I would've contracted it because my body was no longer prepared to defend against it.

Answer 8

Vaccines do not last forever. You can get a test done called a "titer" to check to see if the vaccine is still in your system. Pregnant women are asked to get them to make sure the mother doesn't contract these diseases which will effect the baby.

Answer 9

I have read that vaccines do not last a life time. Every 10 years or so, then its time for another session of vaccinations. Certainly not for a lifetime.

Answer 10

no you are not immune to them.

all the vaccines are non harmful viruses that encode into your dna. so you will have that virus in your dna forever but you will not always be immune to it.

it also depends on what shot you recieved.

for example a flu shot you have to get every year if you are old or are a young child

Answer 11

Once your body develops anti-bodies for a particular threat, they remain. This is not a fail-safe, however, in the instance of mutations which can occur, as with the regular issue with flu vaccines. As to the possibility of mutation of particular viruses, I have not the knowledge to comment further.