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J Virol. 1968 August; 2(8): 778-786
Copyright © 1968 American Society for Microbiology. All Rights Reserved.

Protective Effects of Specific Immunity to Viral Neuraminidase on Influenza Virus Infection of Mice

Jerome L. Schulman, Manijeh Khakpour and Edwin D. Kilbourne

Division of Virus Research, Department of Public Health, Cornell University Medical College, New York, New York 10021

ABSTRACT

Antibody specific for viral neuraminidase can be demonstrated in mice following (i) pulmonary infection with influenza virus, (ii) immunization with ultraviolet-in-activated influenza virus, (iii) immunization with isolated neuraminidase of influenza A2 virus, and (iv) passive immunization with sera of rabbits immunized with isolated A2 neuraminidase. Neuraminidase antibody produced by any of these methods exerts a profound inhibiting effect on virus replication in the lungs of mice challenged with strains of virus having homologous neuraminidase protein, even in the absence of hemagglutinating inhibiting antibody to the challenge virus, and results in markedly decreased pulmonary virus titers and diminished lung lesions. These observations suggest that antineuraminidase immunity may play a significant role in the protection against influenza virus challenge observed in mice after infection or artificial immunization.

J Virol. 1968 August; 2(8): 778-786
Copyright © 1968 American Society for Microbiology. All Rights Reserved.



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Copyright © 1968 by the American Society for Microbiology. All rights reserved.