Traditional smallpox vaccination with reduced risk of inadvertent contact spread by administration of povidone iodine ointment

Erika Hammarlund, Matthew W. Lewis, Jon Hanifin, Eric Simpson, Nichole E. Carlson, Mark Slifka

Research output: Contribution to journalArticle

10 Scopus citations


One concern with traditional smallpox vaccination is inadvertent spread of virus to atopic or immunocompromised contacts. To reduce this risk, we tested the ability of povidone iodine to inactivate infectious virus at the vaccination site beginning at 7 days after transcutaneous smallpox vaccination. This ointment rapidly inactivated virus on the skin without reducing neutralizing antibody titers or antiviral T cell responses. Moreover, there was no delay in healing/eschar separation following povidone iodine application. Together, this indicates that administration of an antiviral/antimicrobial cream can effectively block virus shedding after traditional smallpox vaccination and reduce the risks of autoinoculation or contact spread.

Original languageEnglish (US)
Pages (from-to)430-439
Number of pages10
Issue number3
Publication statusPublished - Jan 17 2008



  • Povidone iodine ointment
  • Smallpox vaccination
  • Vaccinia

ASJC Scopus subject areas

  • Immunology
  • Microbiology
  • Virology
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • veterinary(all)

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