Two related strains of feline infectious peritonitis virus isolated from immunocompromised cats infected with a feline enteric coronavirus.

Journal of Clinical Microbiology
A PolandN C Pedersen

Abstract

Two groups of cats were experimentally infected orally with the cat-passaged RM strain of feline enteric coronavirus (FECV-RM). One group of cats (n = 19) had been chronically infected with feline immunodeficiency virus (FIV) for over 6 years, while a second control group (n = 20) consisted of FIV-naive siblings. Fecal virus shedding of FECV occurred in both groups starting on day 3 postinfection, nearly ceased by 4 weeks in FIV-uninfected cats, but remained at high levels in FIV-infected animals. FIV-infected cats shed virus for a longer period of time and at levels 10 to 100 times greater than those for FIV-uninfected cats. The coronavirus antibody response of the FIV-infected cats was delayed and of reduced titer compared with that of the FIV-uninfected animals. Cats in both groups remained asymptomatic for the first two months following FECV-RM infection; however, 8 to 10 weeks postinfection two cats in the FIV-infected group developed feline infectious peritonitis (FIP). The FIP viruses (designated FIPV-UCD9 and -UCD10) isolated from these two cats had almost complete genetic homology to each other and to the infecting FECV-RM. However, unlike FECV-RM, they readily induced FIP when inoculated intraperitoneally into specifi...Continue Reading

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Citations

Mar 17, 2007·Journal of Feline Medicine and Surgery·Charlotte Dye, Stuart G Siddell
Jun 2, 2009·Journal of Feline Medicine and Surgery·Diane AddieMarian C Horzinek
Mar 20, 2010·The Journal of General Virology·Anja KiparHans Lutz
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