What prevented polio's eradication in 2000?
First, it is important to note that a lot of progress *was* mad ein polio reduction, confining it to just some areas of the Third World by 2000.
This means:
A.) Society was on the right track
B.) Logistical problems having to do with the Third World might have stood in the way
It's not like anti-polio workers "packed up and went home" after the 2000 deadline, so a pattern of progress continues.
Global goal to eradicate polio was set in 1988, 11 years *after* the declared eradication of smallpox. So,logically, a project of this scope would take a while.
"by the end of 2006, only four countries remained which had never interrupted endemic transmission of wild poliovirus (Nigeria, India, Pakistan and Afghanistan)"
This goes back to the Third-World logistical issues above, and Afghanistan has been ravaged by war and civil strife for decades.
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