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On 11/11/11 22:52, James Kilty wrote: > > I have never understood how > non-vaccinated children can be considered a threat to vaccinated > children. Vaccination programmes typically work via herd immunity. Vaccines are not 100% effective, so the un-vaccinated spread disease to those who either can't be vaccinated or have been vaccinated but whose response is inadequate to protect them, thus preserving a reservoir of the infectious agent which would otherwise be too small to sustain itself. This is pretty basic science, and I'd suggest learning about it before reading about "different paradigms of illness", since before we can have a paradigm shift in science the new paradigm will have to explain all the stuff the old paradigm explained (like why no one dies of Smallpox these days). -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq