Polio mainly affects children under 5 years of age.

脊髓灰质主要影响五岁以下儿童。

They were used to help create polio vaccine.

它们被用来帮助制造脊髓灰质疫苗。

The strain detected isn't wild poliovirus, but a strain known as vaccine-derived poliovirus type 2.

检测到的株不野生脊髓灰质，而一种被称为2型疫苗衍生脊髓灰质的株。

The goal is to end transmission of the wild polio virus.

目标结束野生脊髓灰质的。

It is similar to how polio vaccines are made.

这与脊髓灰质疫苗的制造方法相似。

Common vaccines are the polio vaccine and the small pox vaccine.

常见的疫苗有脊髓灰质疫苗和天花疫苗。

Does it really protect against polio?

它真的能预防脊髓灰质吗？

Polio mainly affects children under five years of age. The virus is passed through food or water.

脊髓灰质主要影响五岁以下儿童。

The Salk polio vaccine is a success. The vaccine works.

索尔克脊髓灰质疫苗取得了成功。疫苗起作用了。

James Amule got polio when he was two years old.

詹姆斯·阿穆尔在两岁的时候患了脊髓灰质。

In neighboring India, no polio cases have been reported for the past three years.

在邻国印度，过去三没有报道出现脊髓灰质例。

Polio has been detected among several children in the area.

在该地区在一些孩子身上已经诊断出脊髓灰质。

Jonas Salk and the polio vaccine.

乔纳斯·索尔克和脊髓灰质疫苗。

By 2030 it will be gone.

到2030，脊髓灰质就会消失。

Polio virus is very unforgiving in these communities, you know.

脊髓灰质在这些社区非常无情的，你知道。

To eradicate polio, more than 95 percent of a population needs to be vaccinated.

要根除脊髓灰质，超过95%的人口需要接种疫苗。

A mutated strain of poliovirus has been reported in more than 30 countries.

还有30多个国家都出现了一种脊髓灰质变异株。

Wastewater has long been used to look for signs of the polio virus.

长期以来，废水一直被用来寻找脊髓灰质的迹象。

The number of known cases dropped from 350,000 to just 33 in 2018.

2018，脊髓灰质的确诊例数从35万人下降至33人。

At 60 she is the oldest polio worker in the city.

60岁的她该市龄最大的脊髓灰质工作者。