| 11. | Evaluation of Lassa virus vaccine immunogenicity in the CBA / J-ML29 mouse model is ongoing.
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| 12. | In 1969 a live attenuated virus vaccine was licensed.
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| 13. | His field of research for several years was finding a live-virus vaccine against yellow fever.
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| 14. | In contrast, inactivated virus vaccines contain no living virus, and cannot cause a live infection.
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| 15. | But the method will still produce a live-virus vaccine and no one knows the potential risks.
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| 16. | A record epidemic terrified parents in 1953 even as Salk's killed-virus vaccine went through field trials.
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| 17. | But many scientists doubt that a killed-virus vaccine is the best way to achieve those goals.
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| 18. | The smallpox vaccine is a live-virus vaccine made from a virus similar to smallpox called vaccinia.
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| 19. | In 1959, Albert Sabin introduced his live-virus vaccine.
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| 20. | Dr . Albert Sabin's live-virus vaccine _ swallowed on a sugar cube _ was approved in 1961.
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