A. 1954
B. 1955
C. 1960
D. 1953
Answer: 1954
When was the first successful test of the polio vaccine?
Additional Information: The polio vaccine was first tested successfully in 1954.
Subjects: Important Dates and Events, General Knowledge
A. 1954
B. 1955
C. 1960
D. 1953
Answer: 1954
Additional Information: The polio vaccine was first tested successfully in 1954.
Subjects: Important Dates and Events, General Knowledge