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Immunisation and 'herd immunity'
This is how vaccines work, why they鈥檙e important and what the phrase 鈥渉erd immunity鈥� actually means.
Produced and edited by Elise Wicker; art direction by Alice Greni茅; filming by Derrick Evans; executive production by Lorna Hankin and Charlie Newland
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The World Vaccination Report—The World Vaccination Report
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