Name: How Risky Is the Classroom With Covid-19 Controls in Place? | WSJ
Uploaded: 2021-05-31T06:53:43.000Z
Duration: 6 min 48 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：

- [Narrator] Schools used to look like this,

and teachers just trying to catch a break in the lounge.

We don't know if the ventilation's any good,

those are all the ingredients for a super-spreading event.

- [Narrator] That's why now, school looks very different.

Many schools are only partially open for in-person learning,

- I was very concerned about health issues.

I knew that this was the best thing for students,

to go in physically, 'cause that's hands-down,

- [Narrator] With the virus still spreading,

What are the risks of catching COVID there,

like wearing a mask or increasing ventilation

Let's look at the classroom, lunchroom, and break room.

- Classrooms are one place where you have

a lot of people in the room for a long period of time,

- Age really matters in terms of transmission,

That said, the risk isn't zero, even for younger kids.

Large droplets exchanged in a close range,

and indirectly through contact with a contaminated surface.

and there's no control measures in place,

then they're sitting there breathing and talking,

and they're releasing virus into the air.

- [Narrator] Think of the virus forming a small cloud

would fall nearby, while the smaller droplets

- By shouting and screaming and being emotional,

make them smaller, which we call aerosol,

and can fly further, 10, 20 feet in some cases.

- It's gonna kinda fill the room eventually,

especially if that room is poorly ventilated,

- [Narrator] But this picture changes dramatically

Experts say the most important one is masking.

With masks on everyone, the infected person

And the others would have some protection

- I would say the second most important thing

is to ensure good ventilation of the classroom.

It could be as simple as opening some doors and windows.

That can remove or reduce the virus in the room,

Physical distancing is another way to mitigate risk.

- There's not a magic number for safe versus unsafe,

but the farther apart people are, the better,

- [Narrator] A study of Massachusetts Public Schools

in schools maintaining three feet of distance

were similar to those of schools using six feet.

Prevention gets more complicated in the lunchroom.

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How Risky Is the Classroom With Covid-19 Controls in Place? | WSJ

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