Polio mainly affects children under 5 years of age.

脊髓灰主要影响五岁以下儿童。

They were used to help create polio vaccine.

们被用来帮助制造脊髓灰苗。

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

检测到的病毒株不野生脊髓灰病毒，而一种被称为2型苗衍生脊髓灰病毒的病毒株。

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

目标结束野生脊髓灰病毒的传播。

It is similar to how polio vaccines are made.

这与脊髓灰苗的制造方法相似。

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

常见的苗有脊髓灰苗和天花苗。

Does it really protect against polio?

真的能预防脊髓灰吗？

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

脊髓灰主要影响五岁以下儿童。

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

索尔克脊髓灰苗取得了成功。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。

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病例。

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。

Jonas Salk and the polio vaccine.

乔纳斯·索尔克和脊髓灰苗。

By 2030 it will be gone.

到2030年，脊髓灰就会消失。

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

脊髓灰病毒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，超过95%的人口需要接种苗。

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病毒变异株。

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病毒的迹象。

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

2018年，脊髓灰的确诊病例数从35万人下降至33人。

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

60岁的她该市年龄最大的脊髓灰工作者。