1 ene 1796 año - Edward Jenner invents a vaccine for cowpox
Descripción:
Edward Jenner suggested the premise of variolation, this development spawned the start of all the vaccines that came afterwards.
Vaccines are so necessary for supporting the wellbeing of humans in this day and age, that they are compulsary in many cases.
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fecha:
1 ene 1796 año
Ahora mismo
~ 229 years ago