{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T02:15:38Z","timestamp":1783390538004,"version":"3.54.6"},"reference-count":48,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2025,4,27]],"date-time":"2025-04-27T00:00:00Z","timestamp":1745712000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Cornell Feline Health Center"},{"name":"Michael Zemsky Fund for Feline Disease at Cornell University College of Veterinary Medicine"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pathogens"],"abstract":"<jats:p>Case summary: A 2-year-old male neutered domestic shorthair cat was presented with a progressive history of tetraparesis, ataxia, and inappetence over 4 days. A physical exam revealed mucopurulent nasal discharge and stertor. A neurologic exam revealed a multifocal neurolocalization. The cat was non-ambulatory tetraparetic and developed seizures while in hospital. Hematologic assessment revealed anemia, hypoalbuminemia and hyperglobulinemia. Magnetic resonance imaging (MRI) of the brain revealed multifocal meningeal contrast enhancement in the brainstem and cervical spine, as well as mandibular and retropharyngeal lymphadenopathy. Cerebrospinal fluid revealed marked neutrophilic pleocytosis; no infectious organisms were seen. Toxoplasma IgG\/IgM and Cryptococcus antigen latex agglutination were negative. Mandibular and abdominal lymph nodes were aspirated, and cytology revealed mixed inflammation. The cat was suspected to have feline infectious peritonitis, and to aid in clinical diagnosis he was enrolled in research study\u2014with targeted Nanopore-based sequencing specifically identifying and characterizing FCoV-1 RNA in spinal fluid and anal swab, but not in urine. The cat was treated with anticonvulsants (phenobarbital and levetiracetam), an antibiotic (ampicillin\/clavulanic acid), and GS-441524. Neurologic signs did not improve on an antibiotic alone but improved significantly after two subcutaneous injections of GS-441524. The cat received an 84-day course of GS-441524 and, at the time of manuscript preparation (over 12 months after diagnosis), remains ambulatory and seizure-free without recurrence of neurologic signs and no detectable viral shedding in feces.<\/jats:p>","DOI":"10.3390\/pathogens14050424","type":"journal-article","created":{"date-parts":[[2025,4,29]],"date-time":"2025-04-29T07:49:36Z","timestamp":1745912976000},"page":"424","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Rapid Clinical Resolution and Differential Diagnosis of a Neurological Case of Feline Infectious Peritonitis (FIP) Using GS-441524"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2277-1821","authenticated-orcid":false,"given":"Amy","family":"Huynh","sequence":"first","affiliation":[{"name":"Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pamela","family":"Moraguez","sequence":"additional","affiliation":[{"name":"Department of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Logan M.","family":"Watkins","sequence":"additional","affiliation":[{"name":"Department of Public & Ecosystem Health, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan H.","family":"Wood","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ximena A.","family":"Olarte-Castillo","sequence":"additional","affiliation":[{"name":"Department of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8037-3816","authenticated-orcid":false,"given":"Gary R.","family":"Whittaker","sequence":"additional","affiliation":[{"name":"Department of Microbiology & Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"},{"name":"Department of Public & Ecosystem Health, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"},{"name":"Feline Health Center, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1186\/BF03548211","article-title":"Morbidity, mortality and coronavirus antigen in previously coronavirus free kittens placed in two catteries with feline infectious peritonitis","volume":"34","year":"1993","journal-title":"Acta Vet. 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