Dr. Jonas Salk's polio vaccine is judged safe and effective in 1955

On April 12, 1955, in Ann Arbor, Michigan, doctors and scientists gathered to hear the results of the Salk polio vaccine tests. Dr. Thomas E. Francis announced the vaccine was safe, effective, and potent. The world expressed gratitude to Dr. Jonas Salk, with President Eisenhower officially acknowledging his contribution. The success was widely reported, coinciding with the tenth anniversary of Franklin D. Roosevelt's death, a famous polio patient.

What was the purpose of the gathering in Ann Arbor, Michigan, on April 12th, 1955?

• To honor a famous scientist

• To conduct a new medical experiment

• To announce the results of a vaccine test

• To celebrate a medical breakthrough

Who announced the success of the Salk vaccine?

• Dr. Thomas E. Francis

• President Dwight D. Eisenhower

• Dr. Jonas Salk

• Franklin Delano Roosevelt

What was the reaction of the reporters after the announcement of the vaccine's success?

• They organized a press conference

• They left the venue quietly

• They scrambled to publish their stories

• They interviewed Dr. Salk

How did the world express gratitude towards Dr. Jonas Salk?

• By naming a hospital after him

• Via a statement from President Eisenhower

• Through a public holiday

• By awarding him a Nobel Prize

What significant historical event coincided with the announcement of the Salk vaccine's success?

• The launch of the first satellite

• The tenth anniversary of Franklin Delano Roosevelt's death

• The end of World War II

• The signing of the United Nations Charter