Eventually, with " fewer susceptible people out and about and mingling, " Navarro says, there was nowhere for the virus to go-the " herd immunity" talked about today.

最终，随着“四处走动，混感人群越来越少”，纳瓦罗说，病毒已经无处可去——也即已经形成了今天所说“群体免疫”局面。

And it's so contagious that if people aren't vaccinated, nine out of 10 susceptible people will get infected with the virus if they are exposed.

而且它传染性很强，如果人们不接种疫苗，那么十分之九感人群一旦接触就会感染该病毒。

At that moment, susceptible people become infected at exactly the same rate as infected people become removed.

此时，感人群被感染速度与感染者转归速度完全相同。

First off, we can subtract the final fraction of susceptible people from the whole, to find the total number of people who became infected during the outbreak.

首先，将感染者清零后所剩感人群人数从总人数中减去，我们就算出疫情中有多少人曾被感染。

Instead, we'd say the incidence for the susceptible population is about twice as high, since only around half of the population is susceptible.

相反，我们会说感人群发病率大约是此前两倍，因为只有大约一半人群是感。

Like, if there's a lot of susceptible and infectious people, more susceptible people will become infected, so the number of susceptible people declines more quickly.

比如，如果有很多感染和感染人群，更多感者会被感染，所以感人群数量会下降得更快。

Eventually, at the peak of the outbreak, since there are fewer susceptible people to become infected, infections don't happen as often, which creates a turning point.

最终，疫情高峰期，由于感染感人群减少，感染不会经常发生，这创造了一个转折点。

During the AIDs pandemic of the 1980s, public health agencies in many countries either couldn't, or wouldn't, properly engage with groups who were susceptible.

20 80 年代艾滋病疫情期间，许多国家公共卫生机构要么不，要么不愿与感人群进行适当接触。

So, the number of susceptible people declines over time, proportional to how many people are in both of these groups.

因此，感人群数量随着时间推移而减少，与这两个群体中人数成正比。

The average age of susceptible people has cracked up For a variety of reasons.

感人群平均年龄已经上升，原因多种多样。

These simulations represent what's called an " SIR model" , meaning the population is broken up into three categories, those who are susceptible to the given disease, those who are infectious, and those who have recovered from the infection.

这些模拟代表了所谓“SIR模型”， 意味着人群被分为三类，一类是对特定疾病感人，一类是具有传染性人， 还有一类是从感染中恢复人。

Arthur paused in surprise. Susceptible persons are more affected by a change of tone than by unexpected words, and Arthur had the susceptibility of a nature at once affectionate and vain.

亚瑟惊讶地停了下来。感人更容受到语气变化影响，而不是意想不到话语，而亚瑟天生感，既深情又自负。

You are amiable, Don Lorenzo: Antonia has a susceptible, a loving heart, and is grateful for the favours conferred upon us by your interference with the Marquis.

你很和蔼可亲， 唐·洛伦佐：安东尼娅有一颗感、充满爱心心， 感谢你干涉侯爵给我们带来恩惠。

But so by the time people get to 21 or so, they've settled into a very stable degree of hypnotizability from low to medium to high.

但到了21岁左右，人们已经稳定较低、中等或较高催眠感程度上。

At the same time though, there is plainly some genetic differences across human groups and say with regard to vulnerability to disease.

同时，很明显不同人类群组之间存一些基因差异， 包括对疾病感方面差异。

" Susceptible" is usually used when talking about, for example, an illness or a sickness, or something negative in your behavior.

“感”通常用于谈论例如疾病或某种行为中负面情况。

So we are what's called the susceptible population, meaning not any of us at the beginning of this had immunity.

所以我们是所谓感人群，这意味着我们中任何人这开始时都没有免疫力。

And then the last, and the most important -- and it's often overlooked -- is the density of susceptibles.

最后一点，也是最重要一点——却常常被忽视——那就是感人群密度。

The pathogen doesn't have enough susceptible people to keep infecting, so it stops spreading.

病原体没有足够多感 人群继续感染，因此它停止传播。

To sustain themselves, they need a human population that is sufficiently numerous, and sufficiently densely packed, that a numerous new crop of susceptible children is available for infection by the time the disease would otherwise be waning.

为了维持生存，他们需要足够多、足够密集人口，以便疾病减弱时，有大量新感儿童可供感染。