An inquiry into the antivariolous power of vaccination : in which, from the state of the phenomena, and the occurrence of a great variety of cases, the most serious doubts are suggested of the efficacy of the whole practice, and its powers at best proved to be only temporary, from which also will appear, the necessity of, and proper period for again submitting to, inoculation with variolous virus / by Thomas Brown.

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An inquiry into the antivariolous power of vaccination : in which, from the state of the phenomena, and the occurrence of a great variety of cases, the most serious doubts are suggested of the efficacy of the whole practice, and its powers at best proved to be only temporary, from which also will appear, the necessity of, and proper period for again submitting to, inoculation with variolous virus / by Thomas Brown. Public Domain Mark. Source: Wellcome Collection.

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