That thing you allegedly believe in called survival of the fittest.
So in other words, empty rhetoric. Gotcha.
The number of polio cases in 2004 reached 1,185, compared with 784 in 2003.
Smallpox is weaponized.
The numbers I found aren’t quite that precise. However, they are: ~350,000 cases 1988 to <2000 in 2005. Quite a drop for something that has only become MORE powerful and MORE infectious as you claim.
And your claim that smallpox has gotten stronger through evolution is that humans have ARTIFICIALLY preserved and weaponized it? (The only weaponized smallpox that was out there used to belong to the Soviets and I thought that was destroyed, but I could be wrong about its destruction). So humanity’s artificial preservation of it shows that it is naturally becoming more virulent and powerful due to vaccinations, when it has been eradicated? Wonderful logic you have there.
Correct! There are in fact three others (again, as of this report from 2006): Afghanistan, Pakistan, and India. The fact that it still exists in four countries, all in either Asia or Africa (none in either North or South America, nor Europe, nor Australia), and in 2005 had less than 1% and closer to .5% of the cases it had in 1988 CLEARLY shows it has been strengthening, gaining in power, waiting to overtake the entire world?
You’ve shown no evidence of them being either more dangerous or more powerful due to vaccinations, all evidence shows that it has been severely restricted in scope.

The fact that various countries have been declared polio-free due to vaccination even tho the disease still exists also shows your point wrong.
US in ’94, at least 37 Asian countries in 2000-2001, Australia in 2000, Europe in 2002, and of course the official eradication of smallpox in 1979. Yes, vaccination is TRULY dangerous... for the diseases.
Not smallpox. And with less than 2000 cases per year, polio should follow QUITE soon.
SOURCES: (because dates and numbers need them, so I will provide)
Update on vaccine-derived polioviruses. [MMWR Morb Mortal Wkly Rep. 2006] - PubMed result
http://her.oxfordjournals.org/cgi/reprint/16/1/109.pdf
Australia declared polio free. [Commun Dis Intell. 2002] - PubMed result
WHO | Europe achieves historical milestone as Region is declared polio polio-free
WHO | Smallpox
Metherion
EDITED TO ADD:
OH BY THE WAY... Nigeria is in fact attempting to vaccinate the populace, but is having some trouble. News article:
http://allafrica.com/stories/201003100738.html
EDIT x2: Prayers for all US and UN servicemen in Afghanistan, that they don't get polio (and that they got their vaccines for it, since it's still endemic there AFAIK).