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Semaha Gul Yilmaz,Ozge Aydin,Hasan Emre Tali,Gizem Karadag,Kivilcim Sonmez,Erhan Bayraktar,Aysun Yilmaz,Nuri Turan,Zihni Mutlu,Munir Iqbal,Jurgen A. Richt,Huseyin Yilmaz 대한수의학회 2024 Journal of Veterinary Science Vol.25 No.4
Importance: Although the role of bovine coronavirus (BCoV) in calf diarrhea and respiratorydisorders is well documented, its contribution to neurological diseases is unclear. Objective: This study conducted virological investigations of calves showing diarrhea andrespiratory and neurological signs. Methods: An outbreak of diarrhea, respiratory, and neurological disorders occurred amongthe 12 calves in July 2022 in Istanbul, Türkiye. Two of these calves exhibited neurological signs and died a few days after the appearance of symptoms. One of these calves was necropsied and analyzed using molecular and histopathological tests. Results: BCoV RNA was detected in the brain, lung, spleen, liver, and intestine of the calfthat had neurological signs by real-time reverse transcription polymerase chain reaction. Immunostaining was also observed in the intestine and brain. A 622 bp S1 gene product was noted on gel electrophoresis only in the brain. Phylogenetic analysis indicated that the BCoV detected in this study had a high proximity to the BCoV strain GIb with 99.19% nucleotide sequence homology to the strains detected in Poland, Israel, Türkiye, and France. No distinct genetic lineages were observed when the brain isolate was compared with the respiratory and enteric strains reported to GenBank. In addition, the highest identity (98,72%) was obtained with the HECV 4408 and L07748 strains of human coronaviruses. Conclusions and Relevance: The strain detected in a calf brain belongs to the GIb-Europeanlineage and shares high sequence homology with BCoV strains detected in Europe andIsrael. In addition, the similarity between the human coronaviruses (4408 and L07748) raisesquestions about the zoonotic potential of the strains detected in this study.
Semaha Gul Yilmaz,Ozge Aydin,Hasan Emre Tali,Gizem Karadag,Kivilcim Sonmez,Erhan Bayraktar,Aysun Yilmaz,Nuri Turan,Zihni Mutlu,Munir Iqbal,Jurgen A. Richt,Huseyin Yilmaz The Korean Society of Veterinary Science 2024 Journal of Veterinary Science Vol.25 No.1
Importance: Although the role of bovine coronavirus (BCoV) in calf diarrhea and respiratory disorders is well documented, its contribution to neurological diseases is unclear. Objective: This study conducted virological investigations of calves showing diarrhea and respiratory and neurological signs. Methods: An outbreak of diarrhea, respiratory, and neurological disorders occurred among the 12 calves in July 2022 in Istanbul, Türkiye. Two of these calves exhibited neurological signs and died a few days after the appearance of symptoms. One of these calves was necropsied and analyzed using molecular and histopathological tests. Results: BCoV RNA was detected in the brain, lung, spleen, liver, and intestine of the calf that had neurological signs by real-time reverse transcription polymerase chain reaction. Immunostaining was also observed in the intestine and brain. A 622 bp S1 gene product was noted on gel electrophoresis only in the brain. Phylogenetic analysis indicated that the BCoV detected in this study had a high proximity to the BCoV strain GIb with 99.19% nucleotide sequence homology to the strains detected in Poland, Israel, Türkiye, and France. No distinct genetic lineages were observed when the brain isolate was compared with the respiratory and enteric strains reported to GenBank. In addition, the highest identity (98,72%) was obtained with the HECV 4408 and L07748 strains of human coronaviruses. Conclusions and Relevance: The strain detected in a calf brain belongs to the GIb-European lineage and shares high sequence homology with BCoV strains detected in Europe and Israel. In addition, the similarity between the human coronaviruses (4408 and L07748) raises questions about the zoonotic potential of the strains detected in this study.
Clinical, virological, imaging and pathological findings in SARS CoV-2 antibody positive cat
Kursat Ozer,Aysun Yilmaz,Mariano Carossino,Gulay Yuzbasioglu Ozturk,Ozge Erdogan Bamac,Hasan E. Tali,Egemen Mahzunlar,Utku Y. Cizmecigil,Ozge Aydin,Hamid B. Tali,Semaha G. Yilmaz,Zihni Mutlu,Ayse Ilgı 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.4
This paper reports a presumptive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in a cat. A cat with respiratory disease living with three individuals with coronavirus disease 2019 showed bilateral ground-glass opacities in the lung on X-ray and computed tomography. The clinical swabs were negative for SARS-CoV-2 RNA, but the serum was positive for SARS-CoV-2 antibodies. Interstitial pneumonia and prominent type 2 pneumocyte hyperplasia were noted on histopathology. Respiratory tissues were negative for SARS-CoV-2 RNA or antigen, but the cat was positive for feline parvovirus DNA. In conclusion, the respiratory disease and associated pathology in this cat could have been due to exposure to SARS-CoV-2.