33
/de/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
Create a timeline
Public Timelines
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
FAQ
Das Premium bekommen
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Vereinbarung
Privatheit
FAQ
Support 24/7
Cabinet
Get premium
Donate
Editieren
Herunterladen
Export
Eine Kopie erstellen
Premium
In der Webseite integrieren
Share
eee
Category:
Andere
Wurde aktualisiert:
26 Nov 2017
0
0
513
Autoren
Created by
Sophie
Attachments
Comments
polio
By
Sophie
26 Nov 2017
1
0
480
Ereignisse
The Poliomyelitis Vaccination Act was passed by Congress and signed by President Eisenhower. This act provided 9.8 million doses.
Sabin vaccine developed and released to other researchers of polio.
200 million people have received the Salk vaccine.
Polio decreased dramatically by this time.
Sabin vaccine was proven safe and was released to all people.
The Salk vaccine was proven safe.
About & Feedback
Vereinbarung
Privatheit
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
Comments