Dr. Santiago María del Granado y Navarro Calderón, (b. Cadiz, Spain, 1757; d. Santa Cruz de la Sierra, Bolivia, 1823), was a Spanish nobleman and physician, who at the beginning of the 19th century traveled through some of the most remote regions of South America where epidemics were raging, to inoculate Native Americans with the recently discovered vaccine and prevent the spread of smallpox.
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