| 11. | Particularly represented are documents regarding research, public policy, and programs concerning poliomyelitis and the Salk vaccine.
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| 12. | Shortly after the Salk vaccine came into use, a manufacturing error left live virus in one batch.
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| 13. | The Salk vaccine carries no such risk.
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| 14. | The Salk vaccine virus was grown on monkey kidney cells, then inactivated _ or killed _ by formaldehyde.
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| 15. | The same year, 1961, Cuba used the Salk vaccine to become the first nation to eradicate the disease.
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| 16. | In 1997, Herbert Ratner of Oak Park, Illinois, gave some vials of 1954 Salk vaccine to researcher Michele Carbone.
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| 17. | For example, both the killed Salk vaccine and weakened live Sabin vaccine have brought polio to the verge of eradication.
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| 18. | Unlike the Salk vaccine, the oral version contained a live but weakened form of polio virus and promised lifelong immunity.
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| 19. | The first public disclosure that the Salk vaccine was contaminated came in the New York Times on July 26, 1961.
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| 20. | The Salk vaccine, or " inactivated poliovirus vaccine " ( IPV ), consists of an injected dose of killed poliovirus.
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