Name: 冠狀病毒疫苗解讀｜COVID-19 (The Coronavirus Vaccine Explained | COVID-19)
Uploaded: 2021-01-14T10:30:17.000Z
Duration: 10 min 40 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。學這些英文用法：武漢肺炎,新型冠狀病毒,新冠肺炎,COVID-19

many are doing their part by social distancing

one big question on many people's minds is,

what can we expect with regards to a vaccine?

- So, there are a ton of fascinating things

happening right now and tireless research

we must first talk about how vaccines work.

that the first official vaccine was created

Typically, when you get infected with a virus,

it begins taking over your cell's machinery

But these actions eventually trigger an immune response.

that not only try and destroy the pathogen

What it looks like, the best way to defeat it, and more.

because if the virus ever comes back again,

your body can be immediately prepared to attack it.

But the body takes time to do all of this,

and so, if a virus gets enough of a head start

or attacks somebody with a compromised immune system,

That way, when your body is invaded by the real virus,

it has an advantage because it already knows

Most vaccines work by injecting some aspect of a virus

depending on what strain you're trying to protect against.

the body reacts as thought it's a real threat.

allowing T cells to recognize and bind the foreign antigen,

causing them to replicate into all different kinds

and trigger something called memory cells.

These stick around even after the body is done fighting,

and it's these memory cells that allow for a quick response

- The effectiveness of vaccines have allowed us

to nearly eradicate diseases like measles,

until, of course, the recent vaccine hesitant movement

Regardless, they are extremely powerful tools

and, in our ever-connected world, all of humanity.

Now there is more than one type of vaccine.

Live attenuated vaccines like measles, mumps, and rubeola

introduce weaker or asymptomatic forms of the virus

which are very effective but can't be given to people

Inactive vaccines like polio or hepatitis A

However, they aren't great for long-lasting immunity

because they don't stimulate the real thing

quite as well as live attenuated vaccines

Subunit vaccines like hepatitis B or influenza

use a specific protein or carbohydrate from the pathogen

that will still trigger an immune response.

There are some other experimental DNA vaccines,

That's because they are currently in development

to potentially fight the spread of Covid-19.

- The private company Moderna has created a vaccine

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冠狀病毒疫苗解讀｜COVID-19 (The Coronavirus Vaccine Explained | COVID-19)

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