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A comment on Promising HIV vaccine passes phase one human trials with 90% success rate. Parent comment

Re:Promising HIV vaccine passes phase one human trials with ... by DanI-S on Thursday September 29, 2011 @01:15PM (#3053338)
Not everyone needs to be vaccinated for the phenomenon of 'herd immunity' to kick in:

http://en.wikipedia.org/wiki/Herd_immunity

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