Volume 85, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



To assess immunity after yellow fever (YF) 17D live-attenuated vaccination, we measured the antibody levels before vaccination and at 21 days and 8 months after vaccination in YF-naïve travelers. Thirty subjects were enrolled in the study, with 100% providing sera at 21 days and 86.6% providing sera at 8 months. All subjects seroconverted by day 21, and the geometric mean titers of the anti-YF antibodies decreased between day 21 and month 8 from 6,451 to 1,246. This study corroborates the high rates of seroconversion achieved by the live-attenuated YF vaccine.


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  • Received : 10 Jun 2011
  • Accepted : 17 Jul 2011
  • Published online : 01 Oct 2011

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