Bruce Aylward : How we'll stop polio for good

Bruce Aylward at TED2011  (Transcript)
How we’ll stop polio for good
Summary
Polio is an infectious disease caused by the poliovirus. Children and even adults are likely infected with it, paralysis continues for life, and many patients are dying. It's because polio has no symptoms of infection, no one realizes, and it’s spreading.

Thus almost completely eradicated of polio isn't’ good enough because soon, it’s infectious. In fact, this story was told in 2011. On 2015, in Nigeria, it's going to be eradicated in 2017, though, in 2016, two cases were detected again.
India seemed to be taken off the WHO list of polio endemic countries in 2012.

The action of polio eradication started from around 1930 in America. It took for 20 years to develop the polio vaccine. It succeeded in America, but almost leads to polio outbreaks suddenly but for new tips polio, a vaccine isn't working and finance is also lacking.

In the world, reinfection of polio is reducing, though, almost is not good for us. Again, it’ll be likely spreading. What the polio eradication means to kill the virus itself that causes polio everywhere on Earth.

Words in this story
infectious disease /noun/ contagious disease, epidemic
tenacious /adj/ tenacious, persistent, persevering
endemic /adj/ (of a plant or animal) native or restricted to a certain country or area.