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Vaccine. 2006 Apr 5;24(15):2843-9. Epub 2006 Jan 18.

Neutralizing antibody response to booster vaccination with the 17d yellow fever vaccine.

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  • 1Division of Medicine, United States Army Medical Research Institute for Infectious Diseases, 1425 Porter Street, Fort Detrick, MD 21702-5011, USA.


A retrospective review was conducted of yellow fever vaccination among laboratory workers receiving annual serologic assessment to determine the initial and long-term response after boosting. Patients were divided into three groups based on pre-vaccination serology: Group 1, 1:10; Group 2, 1:20-1:40 and Group 3, >1:40. The percent with > or = four-fold increase in titers after booster vaccination were: 78% (646/829, Group 1), 65% (79/121, Group 2) and 10% (8/79, Group 3) (p<0.0001). The median times to titer failure (<1:40) were 798 days (Group 1), 3340 days (Group 2) and 7709 days (Group 3) (p<0.0001). Pre-vaccination serology influenced the initial and long-term response to yellow fever booster vaccination.

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