and that sir, is herd immunity
In a group where, say, 95% of the people are immune, the chances of the unvaccinated 5% contracting the disease (or passing it on to each other) are so low that the disease just dies out.
Where there's only 62% coverage (like in London, where Jeni broadcasts her twaddle) then there's a good chance that the remaining 38% are going to pass the virus among themselves.
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admiral crunch holds the newsreader's nose squarely, Fri 6 Feb 2009, 13:06,
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