1955 Salk Vaccine Success

The video introduces the date April 12th, 1955, and begins to tell a story related to this significant day. It sets the stage for understanding the historical context and the events that unfolded on this date.

What significant date is introduced in the video?

• June 15th, 1945

• May 5th, 1960

• April 12th, 1955

• July 20th, 1969

What is mentioned to follow the introduction of the date?

• A detailed analysis

• A brief story

• A scientific explanation

• A historical debate