The Risk of Contagion NationQuicklink submitted by Amanda Lang Permalink
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A certain number of any population group needs to have been vaccinated – 80 percent for most diseases, 92 percent for whooping cough – to maintain the ability of the whole population – “the herd” – to resist the spread of a disease.
(image by Sanofi Pasteur for Flickr) DMCA
|Challenges to science are emerging across the political spectrum -- from Christian fundamentalists on the Right to skeptics on the Left who question the inherent good of progress -- with one result a growing resistance to vaccinations for children, as Bill Moyers and Michael Winship note.|
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