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1 ene 1955 año - Jonas Salk (Polio)

Descripción:

*Injected polio vaccine

*Not a live vaccine and triggers response of immune system in most IPV recipients

*Disadvantages are: Price, little immunity, and need staff to inject

Añadido al timeline:

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ByMikey De Leon
14 dic 2018

fecha:

1 ene 1955 año
Ahora mismo
~ 69 years ago
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