English physician Edward Jenner's observation that milkmaids exposed to cowpox were immune to smallpox led to the first vaccine, ultimately enabling the WHO's global eradication campaign that eliminated the disease entirely by 1980 — the only human disease ever eradicated through vaccination.

Comments on "Smallpox Vaccine — Edward Jenner (1796)"
Create a free account or sign in to join the discussion.
Sign in to join the conversation