In response to an inquiry from Sylvanus Fansher (1770-1846), New York physician Moses Younglove sent this letter describing his experiences with smallpox and cowpox inoculation. Younglove claims to have inoculated over 1,400 individuals with only six…
A colleague and friend of Harvard's Benjamin Waterhouse, Sylvanus Fansher (1770-1846) successfully vaccinated over 35,000 individuals in New England, New York, and New Jersey before 1816. This register, maintained by the town council of Providence,…