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Infect Immun. 1977 February; 15(2): 354-359

In vivo interference in vesicular stomatitis virus infection.

ABSTRACT

Inactivated defective interfering and complete particles of vesicular stomatitis virus given intracerebrally to adult mice protect them against challenge with homologous virus whether this is given at the same time or several days later. Two separate protective processes appear to be involved. The first, which comes into operation immediately after inoculation, is also effective against heterologous strains of vesicular stomatitis virus, rabies (another rhabdovirus), and a neurotropic strain of foot-and-mouth disease virus. The second, later effect, which is strain specific, appears to be correlated with the appearance of circulating neutralizing antibody. Our results suggest that the protective effect that Holland and his colleagues described using defective interfering particles of vesicular stomatitis virus may also be accounted for by an immunological mechanism rather than one involving interference.