Polio mainly affects children under 5 years of age.

脊髓灰质炎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炎。

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

检测到不野生脊髓灰质炎，而一种被称为2型衍生脊髓灰质炎。

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

目标结束野生脊髓灰质炎传播。

It is similar to how polio vaccines are made.

这与脊髓灰质炎制造方法相似。

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

常见有脊髓灰质炎和天花。

Does it really protect against polio?

它真能预防脊髓灰质炎吗？

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

脊髓灰质炎主要影响五岁以下儿童。

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

索尔克脊髓灰质炎取得了成功。起作用了。

James Amule got polio when he was two years old.

詹姆斯·阿穆尔在两岁时候患了脊髓灰质炎。

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

在邻国印度，过去三年没有报道出现脊髓灰质炎例。

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炎。

Jonas Salk and the polio vaccine.

乔纳斯·索尔克和脊髓灰质炎。

By 2030 it will be gone.

到2030年，脊髓灰质炎就会消失。

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

脊髓灰质炎在这些社区非常无情，你知道。

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

要根除脊髓灰质炎，超过95%人口需要接种。

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炎变异。

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炎迹象。

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

2018年，脊髓灰质炎确诊例数从35万人下降至33人。

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

60岁她该市年龄最大脊髓灰质炎工作者。