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- 10 December 2012
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This is getting repetitious.
Have I not already voiced my concerns regarding the failure of some to distinguish between correlation and causation?
Have I not also drawn attention to the fact that there were numerous beneficial changes throughout the past century that, ideally, need to be considered when trying to determine causation?
I hope by now you can understand why I consider it unwise to become too attached to opinions regarding the likely causation behind the eradication of the diseases you mention.
Yet you wont answer a simple question.
If small pox wasn't eradicated due to mass immunisation, then what other causation do you offer as an alternative. I honestly can't think of anything else, considering that small pox had been around for roughly 16000 years prior.
Same with polio. I've not met anyone born in Australia within the last 40 years who's had polio. If it isn't vaccination that's allowed this to occur, then what has? The only person of similar age I know who had polio was from South America and had not been vaccinated for polio when living there.
You seem to be arguing that improved sanitation, possibly improved access to food and general health care can explain the reduction in various diseases that are vaccine preventable.