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  • Title: Evaluation of poliovirus antibody titers in orally vaccinated semi-captive chimpanzees in Uganda.
    Author: Mugisha L, Pauli G, Opuda-Asibo J, Joseph OO, Leendertz FH, Diedrich S.
    Journal: J Med Primatol; 2010 Apr; 39(2):123-8. PubMed ID: 20102460.
    Abstract:
    BACKGROUND: To understand immunological responses in chimpanzees vaccinated with live-attenuated vaccine (oral polio vaccine; OPV), serum neutralizing antibodies against poliovirus types 1, 2, and 3 were investigated over time. METHODS: The neutralizing antibody titers against poliovirus types 1, 2, and 3 were determined by microneutralization test using 100 ID(50) of poliovirus types 1, 2, and 3 (Sabin strains). RESULTS: Neutralizing antibodies against poliovirus types 1, 2, and 3 were detected in 85.7%, 71.4%, and 65% of the serum from 42 chimpanzees tested 9 years post-vaccination. The neutralizing antibody titers in chimpanzees were similar to the documented levels in human studies as an indicator of vaccine efficacy. CONCLUSIONS: This study reveals persistence of neutralizing antibodies in chimpanzees for at least 9 years after vaccination with OPV. This first study in chimpanzees provides useful information for the evaluation of the success of vaccination with OPV in other captive apes.
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