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1 Jan 1952 Jahr - A Vaccine For Polio Was Developed

Beschreibung:

Who: Jonas Salk

What: He Develop a vaccine for polio and help many kids get vaccinated

Why:I chose this because many people woulkd have died to this dangurerus virus

Zugefügt zum Band der Zeit:

Heath Science

ByNathan Vong
10 Feb 2020
0
0
293

Datum:

1 Jan 1952 Jahr
Jetzt
~ 73 years ago
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