Detection of canine distemper virus in cerebrospinal fluid, whole blood and mucosal specimens of dogs with distemper using RT‐PCR and immunochromatographic assays. Issue 4 (1st April 2022)

• Record Type: Journal Article
• Authors: Sarchahi, Ali Asghar; Arbabi, Mohammad; Mohebalian, Hadi
• Is Part Of: Veterinary medicine and science. Volume 8:Issue 4(2022)
• Page Start: 1390
• Page End: 1399
• Publication Date: 2022-04-01
• Subjects: canine distemper virus -- cerebrospinal fluid -- mucosal specimens -- rapid immunochromatographic antigen test kit -- RT‐PCR -- whole blood; Veterinary medicine -- Periodicals; Animal Diseases; Veterinary medicine; Periodicals; Periodicals; 636.08905
• DOI: 10.1002/vms3.790
• Languages: English
• ISSNs: 2053-1095

Abstract

Abstract: Background: Accurate diagnosis of canine distemper (CD), a highly contagious and acute viral disease, cannot be made solely based on clinical signs and haematological findings, but serological and molecular methods compatible with clinical signs are also required. The type of sample and method of tissue sampling are also very important. Sometimes in chronic cases, the canine distemper virus (CDV) may not be detected in blood and conjunctival specimens but can be detected in cerebrospinal fluid (CSF). Objectives: The aim of this study was to evaluate and compare the suitability of CSF samples with whole blood and conjunctival samples in the detection of CDV. Methods: The CDV was detected in CSF, whole blood and mucosal specimens in 20 dogs with obvious neurological with or without systemic signs congruous with CD by RT‐PCR and rapid immunochromatographic (IC) antigen test kit assays. Results: Rapid kit results were positive for mucosal swabs in 10 cases (50%) and for CSF in 17 cases (85%); RT‐PCR results from whole blood were positive in 11 cases (55%) and from CSF in 16 cases (80%). Conclusions: Our results revealed that dogs with neurological signs showing simultaneous or recent systemic symptoms, whole blood, CSF and mucosal swabs are suitable for the diagnosis of CDV by RT‐PCR and rapid IC antigen test kits, but dogs with neurological symptoms that are systematically asymptomatic or have had systemic signs for a long time, whole blood and mucosal swabs are not good samples while CSF is a good one. Abstract : Rapid kit results were positive for mucosal swabs in 10 cases (50%) and for CSF in 17 cases (85%); RT‐PCR results from whole blood were positive in 11 cases (55%) and CSF in 16 cases (80%). All mucosal swabs, whole blood and CSF are good samples for diagnosing CDV in a dog that has neurological signs with systemic symptoms of distemper, while the CSF is good sample in dogs that show only neurological signs of distemper without systemic symptoms.