Name: インフルエンザの3つのタイプ (Three Types of Flu)
Uploaded: 2021-01-14T05:00:46.000Z
Duration: 8 min 16 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Let's talk about influenza viruses and the three

different types of influenza that there are.

様態の副詞

There are actually three types, or three families,

And we're going to go through each family.

And we're going to talk about the differences between them.

And so let's actually just label the type over here.

There's type A. And this is the most common type

And type B and C I think are less often talked about.

But we're going to go through them systematically.

So the first thing I want to talk about are the symptoms.

If you actually get these types of influenza,

Well, for type A you expect the classic things

Some respiratory symptom, like maybe a cough.

And that would be something like a fever or a malaise or body

And for type B, it's actually pretty much the same.

Sometimes people say type B is a little bit more mild than type

A. But generally speaking, it's very hard

to know whether you have type A or type B flu.

These are the classic way we think about flu.

Respiratory symptoms and constitutional symptoms.

Now, type C is actually kind of different.

It's actually usually only respiratory symptoms.

Now, of course I'm not going to use the word always

whenever I do this kind of thing because everyone

But type C is usually going to be just a respiratory symptom.

So you might have a stuffy nose and a sore throat,

You wouldn't have any of the fever, the malaise, body aches,

As I go through I'm going to kind of circle

some things I think are kind of interesting.

because here we have an example of influenza type C that's

actually causing symptoms that we don't classically

I would think that they had the common cold.

So initially we talked about how you have copycat viruses.

Where the influenza virus actually isn't even

causing what I would clinically call the flu.

So what's another difference between these three

Let me actually write out the term epidemic.

And you may not be totally comfortable with what

And sometimes people use the word differently.

But type A and type B can both cause epidemics.

Let me actually just draw out quickly the idea

Let's say you have one year at the bottom.

I'm going to go through the whole calendar year.

And then August, September, October, November, December.

I would actually probably expect something like this.

Where you have a high level of activity in the winter.

And then as the winter months approach again

Now, with type C it's actually really different.

So type C I'm going to do in a red color.

So when I say epidemic, what I'm really referring to,

is the fact that you can see that there's

an elevation in terms of the number of cases--

You're seeing more cases during some months

So whenever you see more cases than you would expect,

we sometimes think of that as an epidemic.

And in this case you might even call it a winter epidemic.

So type A and B cause these winter epidemics,

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インフルエンザの3つのタイプ (Three Types of Flu)

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