Stephen J. Schueler, M.D.

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Smallpox Transmission

Facts about smallpox:

  • Smallpox is very contagious.
    • Exposure to the virus usually results in an infection.
  • People with smallpox release the virus into the air on droplets of mucus when they sneeze or cough.
  • The smallpox virus enters the lungs of others when they inhale the droplets.
  • Currently, the only possible source of exposure would be from a laboratory that studies smallpox.

Continue to Smallpox Types

Last Updated: Jul 31, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Smallpox References
  1. Heymann DL. Smallpox containment updated: considerations for the 21st century. Int J Infect Dis. 2004 Oct;8 Suppl 2:S15-20. [15491871]
  2. Kerrod E, Geddes AM, Regan M, Leach S. Surveillance and control measures during smallpox outbreaks. Emerg Infect Dis. 2005 Feb;11(2):291-7. [15752449]
  3. Woods R, McCarthy T, Barry MA, Mahon B. Diagnosing smallpox: would you know it if you saw it? Biosecur Bioterror. 2004;2(3):157-63. [15588053]
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