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1 Okt 1955 Jahr - Polio Vaccine

Beschreibung:

In 1955, the development of the polio vaccine by Jonas Salk led to widespread immunization against the disease ("How Mandatory Vaccination Fueled the Anti-Vaxxer Movement")

Zugefügt zum Band der Zeit:

History of Anti-Vaxxers

Byo
9 Dez 2019
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315

Datum:

1 Okt 1955 Jahr
Jetzt
~ 70 years ago
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