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So a lot of people are trying to decide about
whether flu vaccine is for them.
They want to know, what are the risks
and what are the benefits of getting the flu vaccine?
So I'm going to write up here the risks and benefits.
We're going to go through them kind of systematically,
and hopefully by the end, you'll have a nice little table
you can look at to take a look at kind of both sides,
side by side.
So let's start with some of the common issues.
What are some of the common things
we know are going to be a risk with the vaccine?
Well, when you walk in to get a vaccine,
you kind of know, if it's an injectable vaccine,
that the injection is not going to be pain-free.
I mean, most injections are going to hurt a little bit.
And so this, actually, for some people is not a big deal.
But for others, like me, it is a big deal.
You know, I always remember, people would tell me,
oh, it doesn't hurt that much.
And I would feel like they lied to me, because I always
felt like it did hurt.
And so I always got some arm soreness.
And it's not pleasant.
And that was one of the main reasons
I often kind of dragged my feet about getting the vaccine.
I thought, well, you know, do I really want to go in today
and get an injection in my arm?
And the one that causes arm soreness, the one that we
inject, is the dead vaccine.
I just want to make it very clear.
And we call it TIV.
That's the name of the vaccine.
So if you don't like getting an injection in the arm,
if you're like me, then you can also get the other vaccine.
There's this other vaccine out there.
And it's going to cause, potentially,
a little bit of a runny nose.
This is something that some people get.
I've actually always opted for this one
whenever it was available.
It's the live vaccine.
And it's not for everybody.
Some people are actually not going
to be able to get this one.
Now, in all the years I've had it,
I've actually never had a runny nose,
although I know a lot of people say that they've had that.
So these are the common issues, or the common risks
you take when you get a vaccine, right?
Now, another thing is that they often
are thought to cause the flu, but they actually
do not cause flu.
This is a huge misconception.
So I want to make it very clear.
Something that is dead-- a virus that is dead--
is not going to cause flu for sure.
So that one's kind of obvious.
But even this weak virus, this weakened virus
that's in the vaccine, is also not going to cause the flu.
It causes symptoms that sometimes are unpleasant,
like a runny nose, usually, but it doesn't cause the flu.
So what about the other side?
What are the benefits, the common benefits
that we know you can get from the vaccine?
What are the reasons we even take vaccine?
Well, you want to stay healthy.
You don't want to get flu.
And that's the whole point behind this.
And this is kind of how I qualify it to myself.
I think, well, you know, would I even
be OK with getting an injection in the arm?
Probably, yeah, because I know that in terms of pain,
that might hurt a little bit, but being
on your back in bed for three or four days, sometimes more,
because of the flu, that's awful.
And that's real suffering.
So I would definitely opt for getting a vaccine
over getting the flu.
Now, you know, we measure something
called vaccine efficacy-- kind of the ability of the vaccine
to prevent us from getting ill.
And the vaccine efficacy of this vaccine is not perfect.
That's something we have to remember, right?
It's not 100%.
It's actually, we think, somewhere between 60% and 70%.
So if I'm going to draw a little force field, a purple force
field, showing that I'm protected from the flu,
I've got to actually also show a couple
of little holes in my force field
to say that it's not a perfect bit of protection.
But it's pretty good, and that's the whole point, right?
So those are the common benefits that you can expect.
Now, let me draw a little bit more space up
here so I can continue with this risk/benefit analysis.
What are some uncommon things?
What are some uncommon, more rare
events that you may have heard of,
people sometimes talk about, with the vaccine.
And there are a couple.
There are two that kind of jump to mind I'll talk about.
One of them is called Guillain-Barre.
Kind of a tough word to even spell.
But it's basically a nerve disease
that causes problems-- actually, instead of disease, let
me write syndrome.
It's basically going to cause problems with muscles.
And so you get muscle weakness.
So Guillain-Barre Syndrome-- sometimes we call this GBS,
so you might see GBS-- is essentially a nerve disease.
And the reason we even talk about Guillain-Barre--
you might think, well, what do nerves
have to do with the flu vaccine?
Well, it turned out, interestingly enough,
that back in 1976-- so we've been giving flu vaccine
for a long time-- back in 1976, it was observed--
and this was unbelievable how they were able to find this,
but they found one extra case-- one extra case, approximately,
of Guillain-Barre So one extra case of Guillain-Barre Syndrome
among 100,000 individuals that were vaccinated.
So they said, well, that's interesting.
We didn't expect this person to have Guillain-Barre.
And there seems to be an association with the vaccine.
So as a result of finding this kind of risk back in 1976,
we've been looking ever since.
So in the last 30, 40 years we've
been kind of looking every year, and people are kind of
encouraged to report if they have Guillain-Barre
And we have not seen a real association between the flu
vaccine and Guillain-Barre ever since this year.
But we still continue to look.
And people still talk about Guillain-Barre
and ask questions about it.
So that's why I wanted to bring it up.
Now, the other thing that actually, I think,
people talk about maybe even more commonly
than Guillain-Barre, is febrile seizures.
And if you've ever seen one, these things
are pretty frightening.
These are basically a seizure in a young child after a fever.
And I completely understand why parents
would be worried if they ever see one like this.
And you wouldn't want to see one in your own child, of course.
But the risk of febrile seizures with flu vaccine
is also quite low.
So you usually see about one case among, let's say,
about 1,000 vaccinated kids.
So it's also pretty low.
And here, the reassuring part-- the thing
that is probably most helpful for parents to know--
is that if your child has a febrile seizure,
they almost always get better quickly and completely.
There's no kind of long-term brain damage
that you get from febrile seizures-- nothing like that.
So it is frightening to look at and to see.
It's scary, no doubt about it.
But the kids do recover really, really well.
And they don't have any long-term problems.
So let's jump to the other side.
What are some of the uncommon benefits?
And, actually, I'm saying uncommon.
I should even put it in-- well, I was going to put in quotes.
I guess I can do that.
Because actually, some of these benefits
are more common than you would think.
And so we talk about hospitalizations, right?
And deaths.
And people think, well, you know, it's
not very common to have to go to the hospital
or to die from flu, right?
And actually-- I wrote "die" when I meant "deaths"--
and actually, there are many, many hospitalizations
and deaths happening each year in the US.
These are US numbers, right?
But you can kind of get a sense for these numbers
and project them to your own setting, wherever
you may be living.
In the US, we see thousands and thousands of deaths, year
after year, related to the flu.
This is based on some research that's
been done over the last 30 years.
And hospitalizations as well.
We see 200,000 per year.
So these are not uncommon things, really.
And what are people dying of?
What is the cause of death in hospitalizations?
Well, it's things like pneumonia or bronchitis.
These are pretty common ailments,
and they can land you in the hospital.
And sadly, they can actually land you in the grave
because they're so serious.
And also, things like asthma.
Asthma attacks can be triggered by the flu.
And if you're a parent, you can really
appreciate things like ear infections.
And you can get sinus infections related to the flu.
And more generally, bacterial infections.
So a lot of bacteria like to wait for the flu
to infect, and then right afterwards they kind of jump
in and cause infections as well.
Let me just spell this out just to clear up any confusion.
So these are actually fairly serious issues, right?
These are not trivial.
And they're much, much more common than a lot of people
think about-- all these things, right?
And so when you're comparing them side by side, on the one
side-- on the benefits side-- you're
avoiding hospitalization and death
from fairly common things.
And on the other side, you have truly uncommon things-- things
that happened and were noticed a long time ago,
or people recover completely and fully from.
So between the two sides, again, I
would say that, based on this information,
the benefits win out over the risks.
So now let me just bring up a little bit more space.
And I'm going to get into one final issue,
and this is around something that is really troubling.
This is around myths, things that simply are not true.
And there are a lot of them, actually, around flu vaccine.
There are a lot of myths.
And over the years, I've noticed that there's been a shift.
So a long time ago, I would always hear the same question.
People would say, hey, isn't it true
that the flu vaccine can cause autism?
Because I heard that on the internet, or my mom
forwarded me an email about that.
And that is definitely and completely not true.
So this is not a real thing.
That does not happen.
And then later, over time, I started hearing, well,
maybe it's not the vaccine.
Maybe it's something inside the vaccine.
Maybe it's this thing called thimerosal.
Or maybe something within thimerosal, because thimerosal
is actually a preservative.
Maybe it's this mercury within thimerosal.
And maybe that causes autism.
That was kind of the new thing, I would say, a few years ago.
And that also has been kind of proven, and shown in studies,
not to be the case.
So what do people actually talk about nowadays?
What's the new myth on the block?
There's always a new myth on the block.
And the new one is maybe, just generally speaking,
too many vaccines-- and nowadays, it's funny,
I don't even hear about autism so much--
they say maybe too many vaccines are just bad.
And literally, that's exactly what people will say.
They'll say, I don't want another vaccine,
because I've just heard it's bad.
And maybe more generally, they might say,
bad for the immune system.
So this is kind of the most common new rumor on the block,
or myth on the block.
And so I want to just kind of go through these--
and we'll go through these in other videos one by one
and talk about why they're not true,
but it's very clear, based on research,
that these are not true.
But now, separate from myths, what's
one final argument on the benefits side?
Well, it's called herd immunity.
And you may have heard this term before-- you
may have heard about herd immunity.
Kind of hard to say a few times out loud.
But herd immunity is basically the idea--
let me try to sketch it out for you-- that you
have a community, right?
You've got all these people.
Each white circle is another person,
and they're all living together in a community.
And some of these people are going
to be what we call vulnerable.
So let's say that this is a three-month-old beautiful
little baby.
So a three-month-old baby.
And this baby is too young to get the flu vaccine.
But of course, Mom and Dad are right here.
So Mom and Dad get the vaccine.
And maybe Uncle Joe gets the vaccine,
and Auntie Smith gets the vaccine,
and Grandma, Grandpa get the vaccine.
And cousins who are also around the baby get the vaccine.
And so you get the idea.
Basically, all the people around this baby
are going to get the vaccine.
And now a stranger comes to visit.
This is a person from another city.
They come to visit.
And what everyone doesn't know is
that this person's actually sick.
And they come to a dinner.
And they start coughing.
And of course, they're spreading germs.
Well, what this family has done is that they've
created this nice little zone, it's
called "the safe zone," between anyone that's sick
and the baby.
So these germs are not going to be able to kind of penetrate
this barrier because too many people are vaccinated,
and so these germs can't cause enough infections to get
to this baby.
So this baby is really protected over here.
So that's kind of the goal, is you
want to keep vulnerable members of our community--
including babies and the elderly and other folks-- you
want to keep them safe.
And the best way to keep them safe
is by getting vaccinated and creating
that protection for yourself.
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Flu Vaccine Risks and Benefits

1400 タグ追加 保存
Precious Annie Liao 2014 年 5 月 2 日 に公開
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