The Late Asymptomatic and Terminal Immunodeficiency Phases in Experimentally FIV-Infected Cats—A Long-Term Study

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Abstract
Feline immunodeficiency virus (FIV) is a lentivirus in the family Retroviridae that infects domestic cats resulting in an immunodeficiency disease featuring a progressive and profound decline in multiple sets of peripheral lymphocytes. Despite compelling evidence of FIV-associated immunopathology, there are conflicting data concerning the clinical effects of FIV infection on host morbidity and mortality. To explore FIV-associated immunopathogenesis and clinical disease, we experimentally inoculated a cohort of four specific pathogen-free kittens with a biological isolate of FIV clade C and continuously monitored these animals along with two uninfected control animals for more than thirteen years from the time of inoculation to the humane euthanasia endpoint. Here, we report the results obtained during the late asymptomatic and terminal phases of FIV infection in this group of experimentally FIV-infected cats.
Funding Information
  • UC Davis Center for Companion Animal Health, School of Veterinary Medicine, University of California, Davis (2014-16-F, 2015-2-F, 2016-19-F, 2016-89-F, 2017-19-F, 2019-3-F)
  • Bernice Barbour Foundation (2014-16-F, 2015-2-F, 2016-19-F, 2016-89-F, 2017-19-F, 2019-3-F)

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