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. 1975 May;11(5):1003–1009. doi: 10.1128/iai.11.5.1003-1009.1975

Induction of immunity to feline caliciviral disease.

D E Kahn, E A Hoover, J L Bittle
PMCID: PMC415172  PMID: 1123251

Abstract

Six specific-pathogen-free cats were exposed by aerosol to a feline calicivirus of low virulence (F-9 virus). Homotypic (anti-F-9) seroconversion occurred in all cats by postexposure day 14. The serum of one cat on postexposure day 14 and four of six cats on postexposure day 35 neutralized feline picornavirus isolate no. 225 (FPV-255), a virulent feline calicivirus. Homologous antiviral activity was detected before the appearance of heterologous (anti-FPV-255) activity and always was present in higher titer. Protective immunity was evaluated on postexposure day 35 by aerosol challenge with FPV-255. The pyrexia, depression, dyspnea, oral ulcers, and severe pneumonia produced in two susceptible specific-pathogen-free cats by exposure to FPV-255 did not occur in the cats that had been infected previously with F-9 vir. The study demonstrates that heterotypic protective immunity to feline calicivirus disease can be induced by prior infection with feline calicivirus of low virulence.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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