This principle is called " herd immunity" .

这一原则被称为“群体免疫”。

Herd immunity is a term that factors into our first story today.

“群体免疫”是我们今天的第一个话题。

This is how herd immunity is achieved.

以下是群体免疫的实现途径。

That would help Africa reach herd immunity.

这将有助于非洲实现群体免疫。

That is a point known as herd immunity.

这就是人们熟知的群体免疫。

But herd immunity works only when nearly the whole herd joins in.

但是群体免疫只有在几乎整个群体都同意接种时才起作用。

They say hundreds of thousands died in his bid for herd immunity.

他们说，数十万人死于他的群体免疫政策。

Still, is herd immunity helping Sweden turn the page on corona virus?

不过，群体免疫是否能帮助瑞典翻过冠状病毒这一页？

Luiz Mandetta told senators he felt the President had policy of herd immunity.

路易斯·曼德塔对参议员们说，他认为总统主张群体免疫政策。

For the vulnerable in our society, herd immunity is their best protection.

对于我们社会中的弱势群体来说，群体免疫是他们最好的保护。

He urged more Russians to get vaccinated so the country could reach herd immunity faster.

他敦促更多的俄罗斯人接种疫苗，以便该国能够更快地获得群体免疫。

" Thanks to this, we are only weeks away from reaching herd immunity, " he said.

" 多亏了这一点，我们离实现群体免疫只有几周的时间了。"

If a large percentage chose not to get vaccinated, then we would never get herd immunity.

如果有很大一部分人选择不接种疫苗，那么我们永远都实现不了群体免疫。

It says there was an attempt in effect to try and achieve herd immunity by infection.

该报告称，实际上有人试图通过感染来实现群体免疫力。

But analysts say vaccinating enough people to achieve herd immunity this year is simply not realistic.

但分析人士表示，今年为足够多的人接种疫苗以实现群体免疫是不现实的。

The vaccination rate for herd immunity varies by disease, but usually falls between 85% and 95%.

不同的疾病对群体免疫接种率的要求不同，但通常应在85%到95%之间。

A Swedish disease expert said there are signs of herd immunity appearing around the capital Stockholm.

一名瑞典疾病专家表示，首都斯德哥尔摩附近出现了群体免疫的迹象。

Enough of the rest would then be immune for the population to have developed " herd immunity" .

剩下的人就获得免疫力，从而形成“群体免疫”。

Herd immunity occurs when a sufficient percentage of a population has become immune reducing the likelihood of infection for individuals who lack immunity.

当一个群体中有足够比例的人变得免疫时，群体免疫就会发生，从而降低那些缺乏免疫力的人感染的可能性。

He also warned the new variants are posing challenges in the efforts to achieve herd immunity through vaccination.

他还警告表示，病毒的变种对通过接种疫苗实现群体免疫的努力构成挑战。