Letter From Catherine the Great Shows Her Support for Inoculations
https://ift.tt/3d0WlxN a letter from 1787 to be sold at auction this week, the Russian empress called for widespread access to a precursor of the smallpox vaccine.
from NYT > World News https://ift.tt/3ljCHBO
from NYT > World News https://ift.tt/3ljCHBO
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