[Relationship between the level of specific antibodies with disease outcome in Cercopithecus aethiops monkeys in experimental Marburg disease].

The level of specific antibodies in the blood of Cercopithecus aethiops monkeys with experimental Marburg hemorrhagic fever appreciably affects the incidence of lethal outcomes in immunized animals infected with Marburg virus. This effect manifests starting from the titers as low as just 1:100. The level of humoral immunity with the specific antibody titer of at least 1:100 depends on the method of antigen preparation. Humoral response was higher upon challenge with formalin-inactivated virus isolated from the blood plasma of infected guinea pigs.