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10h 14min, jun 6, 1948 y - Tos ferina: vacuna combinada con las del tétanos y la difteria

Description:

La primea vacuna DTP (difteria, tétanos y tos ferina) combinada estuvo disponible en Estados Unidos.

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EV3 MARTÍNEZ barranco sismai zabdiel

15 Nov 2017

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Date:

10h 14min, jun 6, 1948 y

Now

~ 78 years ago

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