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J Hyg (Lond). 1923 May; 21(3): 243–249.
doi: 10.1017/s0022172400031478
PMCID: PMC2167341
PMID: 20474777

The Spread of Bacterial Infection. The Problem of Herd-Immunity

W. W. C. Topley and G. S. Wilson
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Articles from The Journal of Hygiene are provided here courtesy of Cambridge University Press