[Persistence of the measles antigen in the central nervous system of monkeys infected with clonal variants of the L-16 vaccinal strain of the measles virus].

The time of persistence of measles antigen was studied in Macaca mulatta and green monkeys inoculated intracerebrally with the vaccine L-16 strain of measles virus and its two genetically homologous variants. Two clones differing in their neurovirulence were used. The results of the study showed correlation between the time of the antigen persistence in the central nervous system and the severity of morphological changes.