| 41. | Subclinically affected vaccinated horses can shed live virus and represent a threat to unvaccinated or inappropriately vaccinated horses.
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| 42. | Since it is not a live virus vaccine, like the smallpox vaccine, it cannot give a person ebola.
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| 43. | A vaccine that used just parts of vaccinia instead of the live virus itself might prove even safer.
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| 44. | However, FluMist, which contains weakened live virus, cannot be used by those at highest risk for flu complications.
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| 45. | Although this is a live virus, it originates from a bird host and so does not replicate in mammals.
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| 46. | The live virus in the vaccine has been modified and weakened so that it produces immunity without causing illness.
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| 47. | The vaccine is made of a live virus called vaccinia and poses a risk of serious complications, even death.
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| 48. | FluMist contains each of the three influenza live virus strains expected to be active during the 2003-2004 flu season.
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| 49. | The smallpox vaccine involves injecting live virus into an individual and prompting the creation of antibodies to maintain immunity.
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| 50. | Because the tests involve live viruses, they must be conducted in a laboratory with tight biological security, he said.
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