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Vaccine developed and distributed (5 dic 1940 año – 27 oct 1950 año)

Descripción:

New vaccine has 99% effectiveness and lasts for entire lifetime

Añadido al timeline:

Amber, Danielle, Desiray, Isaac, and Ronald

1 dic 2017

0

0

443

fecha:

5 dic 1940 año

27 oct 1950 año

~ 9 years and 10 months

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