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Analysis of Simian Immunodeficiency Virus-specific CD8+ T-cells in Rhesus Macaques by Peptide-MHC-I Tetramer Staining
Published on: December 23, 2016
A poxvirus of primates. II. Immunology
1Oregon Regional Primate Research Center, Beaverton, Oregon 97005, USA.
Abstract:
OrTeCa poxvirus shares antigens with Yaba virus, as evidenced by two-way crossreactions in complement-fixation and neutralization tests. Antibodies produced by vaccinia and monkeypox viruses showed weak complement-fixation reactions with OrTeCa viral antigen, but neutralization reactions were negative and cross protection in vivo was not demonstrated. OrTeCa and Yaba virus antisera both contained complement-fixing and neutralizing antibodies against swinepox virus, but swinepox antiserum had no antibodies to any other poxvirus. Long-lasting immunity to the OrTeCa pox disease was produced in monkeys and man by spontaneous infection or vaccination with OrTeCa poxvirus. Complement-fixing antibody titers could be measured in convalescence, but tended to drop to low levels or disappear thereafter. In contrast, neutralizing antibody titers remained high for 3 years, and monkeys that were challenged with OrTeCa virus were reFractory to a second infection.
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