| 21. | Therefore, the variola stockpiles would be of little use in such an effort, Henderson noted.
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| 22. | So far, one anti-AIDS drug, cidofovir, appears to be useful against variola.
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| 23. | For example, vaccinia virus is used to prevent smallpox, which is caused by variola virus.
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| 24. | In 1982, Serbian director Variola Vera " about a hospital under quarantine during the epidemic.
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| 25. | The last naturally occurring infection was of " Variola minor " in Somalia in 1977.
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| 26. | Tierney published his " Observations on Variola Vaccina, or Cow Pock " in 1840.
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| 27. | In the 15th century, Pizarro is reported to have presented South American natives with variola-contaminated clothing.
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| 28. | Smallpox, caused by variola virus, spreads easily and is fatal up to 30 percent of the time.
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| 29. | The last naturally occurring case of " Variola major " was diagnosed in October 1975 in Bangladesh.
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| 30. | Camelpox, taterapox and variola viruses arose 3, 500 years ago and horsepox virus ~ 3, 000.
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