Polio Pioneer series-Spy School Alyssa must pass a series

Alyssa must pass a series of tests

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Polio Pioneer series-Spy School Alyssa must pass a seriesDr. Jonas Salk is one of the most celebrated doctors and medical researchers of the 20th century. The child of immigrants who never learned to speak English, Jonas was struck by the devastation he saw when the soldiers returned from battle after WWII. Determined to help, he worked to become a doctor and eventually joined the team that created the influenza vaccine. But Jonas wanted to do more. As polio ravaged the United Stateseven the president was