Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Ricevere il Premium

Create a timeline

Public timelines

About & Feedback Accordo Privatezza FAQ

Cabinet Get premium

Donate

26 apr 1954 anni - The Salk vaccine was tested on 1.8 million schoolchildren.

Aggiunto al nastro di tempo:

polio

26 nov 2017

1

0

478

Data:

26 apr 1954 anni

Adesso

~ 71 years ago

About & Feedback Accordo Privatezza FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL