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28 déc. 1948 - La edad de oro de la vacunación.Después de la vacuna de la poliomielitis, se desarrollaron vacunas frente al sarampión, l a parotiditis y la rubéola.
Ajouté au bande de temps:
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By
victor
16 nov. 2017
0
0
348
Date:
28 déc. 1948
Maintenaint
~ Il y a 76 ans
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