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van den Hurk S, Regmi G, Naikare HK, Velayudhan BT. Advances in Laboratory Diagnosis of Coronavirus Infections in Cattle. Pathogens 2024; 13:524. [PMID: 39057751 PMCID: PMC11279749 DOI: 10.3390/pathogens13070524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
Coronaviruses cause infections in humans and diverse species of animals and birds with a global distribution. Bovine coronavirus (BCoV) produces predominantly two forms of disease in cattle: a respiratory form and a gastrointestinal form. All age groups of cattle are affected by the respiratory form of coronavirus, whereas the gastroenteric form causes neonatal diarrhea or calf scours in young cattle and winter dysentery in adult cattle. The tremendous impacts of bovine respiratory disease and the associated losses are well-documented and underscore the importance of this pathogen. Beyond this, studies have demonstrated significant impacts on milk production associated with outbreaks of winter dysentery, with up to a 30% decrease in milk yield. In North America, BCoV was identified for the first time in 1972, and it continues to be a significant economic concern for the cattle industry. A number of conventional and molecular diagnostic assays are available for the detection of BCoV from clinical samples. Conventional assays for BCoV detection include virus isolation, which is challenging from clinical samples, electron microscopy, fluorescent antibody assays, and various immunoassays. Molecular tests are mainly based on nucleic acid detection and predominantly include conventional and real-time polymerase chain reaction (PCR) assays. Isothermal amplification assays and genome sequencing have gained increased interest in recent years for the detection, characterization, and identification of BCoV. It is believed that isothermal amplification assays, such as loop-mediated isothermal amplification and recombinase polymerase amplification, among others, could aid the development of barn-side point-of-care tests for BCoV. The present study reviewed the literature on coronavirus infections in cattle from the last three and a half decades and presents information mainly on the current and advancing diagnostics in addition to epidemiology, clinical presentations, and the impact of the disease on the cattle industry.
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Affiliation(s)
- Shaun van den Hurk
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA;
| | - Girija Regmi
- Tifton Veterinary Diagnostic and Investigational Laboratory, College of Veterinary Medicine, University of Georgia, Tifton, GA 30602, USA;
| | - Hemant K. Naikare
- University of Minnesota Veterinary Diagnostic Laboratory, Saint Paul, MN 55108, USA;
| | - Binu T. Velayudhan
- Athens Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA;
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Lin CH, Hsieh FC, Wang M, Hsu C, Hsu HW, Yang CC, Yang CY, Wu HY. Identification of subgenomic mRNAs derived from the coronavirus 1a/1b protein gene: Implications for coronavirus transcription. Virology 2024; 589:109920. [PMID: 37952466 DOI: 10.1016/j.virol.2023.109920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/20/2023] [Accepted: 10/23/2023] [Indexed: 11/14/2023]
Abstract
Synthesis of coronavirus subgenomic mRNA (sgmRNA) is guided by the transcription regulatory sequence (TRS). sgmRNA derived from the body TRS (TRS-B) located at the 1a/1b protein gene is designated 1ab/sgmRNA. In the current study, we comprehensively identified the 1ab/sgmRNAs synthesized from TRS-Bs located at the 1a/1b protein genes of different coronavirus genera both in vitro and in vivo by RT‒PCR and sequencing. The results suggested that the degree of sequence homology between the leader TRS (TRS-L) and TRS-B may not be a decisive factor for 1ab/sgmRNA synthesis. This observation led us to revisit the coronavirus transcription mechanism and to propose that the disassociation of coronavirus polymerase from the viral genome may be a prerequisite for sgmRNA synthesis. Once the polymerase can disassociate at TRS-B, the sequence homology between TRS-L and TRS-B is important for sgmRNA synthesis. The study therefore extends our understanding of transcription mechanisms.
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Affiliation(s)
- Ching-Hung Lin
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Feng-Cheng Hsieh
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Meilin Wang
- Department of Microbiology and Immunology, School of Medicine, Chung-Shan Medical University and Clinical Laboratory, Chung-Shan Medical University Hospital, Taichung, 40201, Taiwan
| | - Chieh Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hsuan-Wei Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Chun-Chun Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Cheng-Yao Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan.
| | - Hung-Yi Wu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan.
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Lin CH, Hsieh FC, Chang YC, Yang CY, Hsu HW, Yang CC, Tam HMH, Wu HY. Targeting the conserved coronavirus octamer motif GGAAGAGC is a strategy for the development of coronavirus vaccine. Virol J 2023; 20:267. [PMID: 37968733 PMCID: PMC10652495 DOI: 10.1186/s12985-023-02231-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/06/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Coronaviruses are pathogens of humans and animals that cause widespread and costly diseases. The development of effective strategies to combat the threat of coronaviruses is therefore a top priority. The conserved coronavirus octamer motif 5'GGAAGAGC3' exists in the 3' untranslated region of all identified coronaviruses. In the current study, we aimed to examine whether targeting the coronavirus octamer motif GGAAGAGC is a promising approach to develop coronavirus vaccine. METHODS Plaque assays were used to determine the titers of mouse hepatitis virus (MHV)-A59 octamer mutant (MHVoctm) and wild-type (wt) MHV-A59 (MHVwt). Western blotting was used for the determination of translation efficiency of MHVoctm and MHVwt. Plaque assays and RT-qPCR were employed to examine whether MHVoctm was more sensitive to interferon treatment than MHVwt. Weight loss, clinical signs, survival rate, viral RNA detection and histopathological examination were used to evaluate whether MHVoctm was a vaccine candidate against MHVwt infection in BALB/c mice. RESULTS In this study, we showed that (i) the MHVoctm with mutation of coronavirus octamer was able to grow to high titers but attenuated in mice, (ii) with the reduced multiplicity of infection (MOI), the difference in gene expression between MHVoctm and MHVwt became more evident in cultured cells, (iii) MHVoctm was more sensitive to interferon treatment than MHVwt and (iv) mice inoculated with MHVoctm were protected from MHVwt infection. CONCLUSIONS Based on the results obtained from cultured cells, it was suggested that the synergistic effects of octamer mutation, multiplicity of infection and immune response may be a mechanism explaining the distinct phenotypes of octamer-mutated coronavirus in cell culture and mice. In addition, targeting the conserved coronavirus octamer motif is a strategy for development of coronavirus vaccine. Since the conserved octamer exists in all coronaviruses, this strategy of targeting the conserved octamer motif can also be applied to other human and animal coronaviruses for the development of coronavirus vaccines, especially the emergence of novel coronaviruses such as SARS-CoV-2, saving time and cost for vaccine development and disease control.
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Grants
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
- 109-2313-B-005 -013 -MY3, 110-2327-B-005 -003, 111-2327-B-005 -003 and 112-2313-B-005-041 National Science and Technology Council, Taiwan, R.O.C.
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Affiliation(s)
- Ching-Hung Lin
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Feng-Cheng Hsieh
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Yu-Chia Chang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Cheng-Yao Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hsuan-Wei Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Chun-Chun Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hon-Man-Herman Tam
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hung-Yi Wu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan.
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Lin CH, Tam HMH, Yang CY, Hsieh FC, Wang JL, Yang CC, Hsu HW, Liu HP, Wu HY. Evolution of the coronavirus spike protein in the full-length genome and defective viral genome under diverse selection pressures. J Gen Virol 2023; 104:001920. [PMID: 37997889 PMCID: PMC10768696 DOI: 10.1099/jgv.0.001920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 10/28/2023] [Indexed: 11/25/2023] Open
Abstract
How coronaviruses evolve by altering the structures of their full-length genome and defective viral genome (DVG) under dynamic selection pressures has not been studied. In this study, we aimed to experimentally identify the dynamic evolutionary patterns of the S protein sequence in the full-length genome and DVG under diverse selection pressures, including persistence, innate immunity and antiviral drugs. The evolutionary features of the S protein sequence in the full-length genome and in the DVG under diverse selection pressures are as follows: (i) the number of nucleotide (nt) mutations does not necessarily increase with the number of selection pressures; (ii) certain types of selection pressure(s) can lead to specific nt mutations; (iii) the mutated nt sequence can be reverted to the wild-type nt sequence under the certain type of selection pressure(s); (iv) the DVG can also undergo mutations and evolve independently of the full-length genome; and (v) DVG species are regulated during evolution under diverse selection pressures. The various evolutionary patterns of the S protein sequence in the full-length genome and DVG identified in this study may contribute to coronaviral fitness under diverse selection pressures.
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Affiliation(s)
- Ching-Hung Lin
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Hon-Man-Herman Tam
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Cheng-Yao Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Feng-Cheng Hsieh
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Jiun-Long Wang
- Division of Chest Medicine, Department of Internal Medicine, Taichung Veterans General Hospital, Taichung 40705, Taiwan, ROC
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
- Department of Life Sciences, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Chun-Chun Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Hsuan-Wei Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Hao-Ping Liu
- Department of Veterinary Medicine, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
| | - Hung-Yi Wu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung 40227, Taiwan, ROC
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Lin CH, Chen B, Chao DY, Hsieh FC, Yang CC, Hsu HW, Tam HMH, Wu HY. Unveiling the biology of defective viral genomes in vitro and in vivo: implications for gene expression and pathogenesis of coronavirus. Virol J 2023; 20:225. [PMID: 37803357 PMCID: PMC10559480 DOI: 10.1186/s12985-023-02189-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/19/2023] [Indexed: 10/08/2023] Open
Abstract
BACKGROUND Defective viral genome (DVG) is a truncated version of the full-length virus genome identified in most RNA viruses during infection. The synthesis of DVGs in coronavirus has been suggested; however, the fundamental characteristics of coronavirus DVGs in gene expression and pathogenesis have not been systematically analyzed. METHODS Nanopore direct RNA sequencing was used to investigate the characteristics of coronavirus DVGs in gene expression including reproducibility, abundance, species and genome structures for bovine coronavirus in cells, and for mouse hepatitis virus (MHV)-A59 (a mouse coronavirus) in cells and in mice. The MHV-A59 full-length genomic cDNAs (~ 31 kilobases) were in vitro constructed to experimentally validate the origin of coronavirus DVG. The synthesis of DVGs was also experimentally identified by RT-PCR followed by sequencing. In addition, the alterations of DVGs in amounts and species under different infection environments and selection pressures including the treatment of antiviral remdesivir and interferon were evaluated based on the banding patterns by RT-PCR. RESULTS The results are as follows: (i) the structures of DVGs are with diversity, (ii) DVGs are overall synthesized with moderate (MHV-A59 in cells) to high (BCoV in cells and MHV-A59 in mice) reproducibility under regular infection with the same virus inoculum, (iii) DVGs can be synthesized from the full-length coronavirus genome, (iv) the sequences flanking the recombination point of DVGs are AU-rich and thus may contribute to the recombination events during gene expression, (v) the species and amounts of DVG are altered under different infection environments, and (vi) the biological nature of DVGs between in vitro and in vivo is similar. CONCLUSIONS The identified biological characteristics of coronavirus DVGs in terms of abundance, reproducibility, and variety extend the current model for coronavirus gene expression. In addition, the biological features of alterations in amounts and species of coronavirus DVGs under different infection environments may assist the coronavirus to adapt to the altered environments for virus fitness and may contribute to the coronavirus pathogenesis. Consequently, the unveiled biological features may assist the community to study the gene expression mechanisms of DVGs and their roles in pathogenesis, contributing to the development of antiviral strategy and public health.
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Affiliation(s)
- Ching-Hung Lin
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - BoJia Chen
- Doctoral Program in Microbial Genomics, National Chung Hsing University and Academia Sinica, Taichung, 40227, Taiwan
| | - Day-Yu Chao
- Doctoral Program in Microbial Genomics, National Chung Hsing University and Academia Sinica, Taichung, 40227, Taiwan
- Graduate Institute of Microbiology and Public Health, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Feng-Cheng Hsieh
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Chun-Chun Yang
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hsuan-Wei Hsu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hon-Man-Herman Tam
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Hung-Yi Wu
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, 40227, Taiwan.
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Geng HL, Meng XZ, Yan WL, Li XM, Jiang J, Ni HB, Liu WH. Prevalence of bovine coronavirus in cattle in China: A systematic review and meta-analysis. Microb Pathog 2023; 176:106009. [PMID: 36736543 DOI: 10.1016/j.micpath.2023.106009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/14/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023]
Abstract
Bovine coronavirus (BCoV) is one of the important pathogens that cause calf diarrhea (CD), winter dysentery (WD), and the bovine respiratory disease complex (BRDC), and spreads worldwide. An infection of BCoV in cattle can lead to death of young animals, stunted growth, reduced milk production, and milk quality, thus bringing serious economic losses to the bovine industry. Therefore, it is necessary to prevent and control the spread of BCoV. Here, a systematic review and meta-analysis was conducted to assess the prevalence of BCoV in cattle in China before 2022. A total of 57 articles regarding the prevalence of BCoV in cattle in China were collected from five databases (PubMed, ScienceDirect, CNKI, VIP, and Wan Fang). Based on the inclusion criteria, a total of 15,838 samples were included, and 6,136 were positive cases. The overall prevalence of BCoV was 30.8%, with the highest prevalence rate (60.5%) identified in South China and the lowest prevalence (15.6%) identified in Central China. We also analyzed other subgroup information, included sampling years, sample sources, detection methods, breeding methods, age, type of cattle, presence of diarrhea, and geographic and climatic factors. The results indicated that BCoV was widely prevalent in China. Among all subgroups, the sample sources, detection methods, breeding methods, and presence or absence of diarrheal might be potential risk factors responsible for BCoV prevalence. It is recommended to strengthen the detection of BCoV in cattle, in order to effectively control the spread of BCoV.
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Affiliation(s)
- Hong-Li Geng
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China; College of Life Science, Changchun Sci-Tech University, Shuangyang, Jilin, PR China
| | - Xiang-Zhu Meng
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China; College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin, PR China
| | - Wei-Lan Yan
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China
| | - Xiao-Man Li
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China
| | - Jing Jiang
- College of Life Science, Changchun Sci-Tech University, Shuangyang, Jilin, PR China.
| | - Hong-Bo Ni
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China.
| | - Wen-Hua Liu
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong, PR China.
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Seroprevalence and Risk Factors for Bovine Coronavirus Infection among Dairy Cattle and Water Buffalo in Campania Region, Southern Italy. Animals (Basel) 2023; 13:ani13050772. [PMID: 36899629 PMCID: PMC10000194 DOI: 10.3390/ani13050772] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/19/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Cattle and water buffalo are the main livestock species that are raised in the Campania region, southern Italy, and they contribute significantly to the regional rural economy. Currently there are limited data on the prevalence of relevant impact infections, such as bovine coronavirus (BCov), an RNA virus that causes acute enteric and respiratory disease. Although these diseases are described primarily in cattle, there have been reports of spillovers to other ruminants, including water buffalo. Here, we determined the seroprevalence of BCoV in cattle and water buffalo in the Campania region of southern Italy. An overall seroprevalence of 30.8% was determined after testing 720 sampled animals with a commercial enzyme-linked immunosorbent assay. A risk factor analysis revealed that the seropositivity rates in cattle (49.2%) were higher than in water buffalo (5.3%). In addition, higher seroprevalence rates were observed in older and purchased animals. In cattle, housing type and location were not associated with higher seroprevalence. The presence of BCoV antibodies in water buffalo was associated with the practice of co-inhabiting with cattle, demonstrating that this practice is incorrect and promotes the transmission of pathogens between different species. Our study found a considerable seroprevalence, which is consistent with previous research from other countries. Our results provide information on the widespread distribution of this pathogen as well as the risk factors that are involved in its transmission. This information could be useful in the control and surveillance of this infection.
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Crossley RE, Bokkers EAM, Browne N, Sugrue K, Kennedy E, Conneely M. Risk factors associated with indicators of dairy cow welfare during the housing period in Irish, spring-calving, hybrid pasture-based systems. Prev Vet Med 2022; 208:105760. [PMID: 36181750 DOI: 10.1016/j.prevetmed.2022.105760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 10/31/2022]
Abstract
In a dairy production system where cows are grazing for a large portion of their lactation, little attention has been afforded to investigating multiple indicators of welfare for risk factors associated with the housing period. Yet regardless of the length of the housing period, cows still experience the positive and negative welfare impacts of both indoor and outdoor environments in a hybrid system. Thus, the objective of this study was to identify risk factors for indicators of dairy cow welfare during the housing period in a spring-calving, hybrid pasture-based system. Herd-level scores for seven indicators of welfare (locomotion, body condition, ocular and nasal discharge, integument damage, tail injury and human avoidance response) were collected from 82 Irish dairy farms during the housing period (October - February). Data were analysed using multiple beta regression or zero-inflated beta regression to identify associations between these welfare indicators and measured herd-level housing, resource and management factors. Thirty-six unique risk factors were associated with one or more welfare indicators (P < 0.05). Analyses identified two risk factors for body condition < 3.0 and four for body condition > 3.5, the target range during the housing period. Four risk factors were identified for each of ocular discharge, nasal discharge and avoidance response of > 1 m from human approach. Six risk factors each were associated with the proportion of lame cows and integument damage to the head-neck-back or hindquarter regions. The greatest number of risk factors, 12, were associated with tail injury (broken, lacerated or incomplete tails). Risk factors associated with multiple indicators of welfare were cow comfort index (tail lacerations and hindquarter integument damage), cubicle width (broken and incomplete tails), shed floor slipperiness (lameness and head-neck-back integument damage), shed light-level (tail lacerations, avoidance response and below target body condition), shed passage width (broken tails and head-neck-back integument damage) and presence (incomplete tails) or absence (broken tails) of a collecting yard backing gate. With the large number of risk factors associated with tail injury, continued research is necessary to identify causes and determine prevention methods to contribute to improved overall welfare of dairy cows. Housing features meeting recommended guidelines from the literature were frequently associated with greater negative indicators of welfare. In light of this, housing guidelines may benefit from regular re-evaluation to ensure facilities meet the welfare needs of cows during the housing period.
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Affiliation(s)
- R E Crossley
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland; Animal Production Systems group, Department of Animal Sciences, Wageningen University and Research, Wageningen 6700 AH, the Netherlands.
| | - E A M Bokkers
- Animal Production Systems group, Department of Animal Sciences, Wageningen University and Research, Wageningen 6700 AH, the Netherlands.
| | - N Browne
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland; School of Veterinary Medicine and Science, University of Nottingham, Loughborough LE12 5RD, United Kingdom.
| | - K Sugrue
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland.
| | - E Kennedy
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland.
| | - M Conneely
- Teagasc, Animal & Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland.
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Zhu Q, Li B, Sun D. Advances in Bovine Coronavirus Epidemiology. Viruses 2022; 14:v14051109. [PMID: 35632850 PMCID: PMC9147158 DOI: 10.3390/v14051109] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/02/2022] [Accepted: 05/19/2022] [Indexed: 11/16/2022] Open
Abstract
Bovine coronavirus (BCoV) is a causative agent of enteric and respiratory disease in cattle. BCoV has also been reported to cause a variety of animal diseases and is closely related to human coronaviruses, which has attracted extensive attention from both cattle farmers and researchers. However, there are few comprehensive epidemiological reviews, and key information regarding the effect of S-gene differences on tissue tendency and potential cross-species transmission remain unclear. In this review, we summarize BCoV epidemiology, including the transmission, infection-associated factors, co-infection, pathogenicity, genetic evolution, and potential cross-species transmission. Furthermore, the potential two-receptor binding motif system for BCoV entry and the association between BCoV and SARS-CoV-2 are also discussed in this review. Our aim is to provide valuable information for the prevention and treatment of BCoV infection throughout the world.
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Affiliation(s)
- Qinghe Zhu
- Heilongjiang Provincial Key Laboratory of the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China;
| | - Bin Li
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Nanjing 210014, China
- Correspondence: (B.L.); (D.S.); Tel.: +86-045-9681-9121 (D.S.)
| | - Dongbo Sun
- Heilongjiang Provincial Key Laboratory of the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China;
- Correspondence: (B.L.); (D.S.); Tel.: +86-045-9681-9121 (D.S.)
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Smith FL, Heller MC, Crossley BM, Clothier KA, Anderson ML, Barnum SS, Pusterla N, Rowe JD. Diarrhea outbreak associated with coronavirus infection in adult dairy goats. J Vet Intern Med 2022; 36:805-811. [PMID: 35165938 PMCID: PMC8965271 DOI: 10.1111/jvim.16354] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 12/19/2021] [Accepted: 12/22/2021] [Indexed: 11/28/2022] Open
Abstract
Background Infection by coronaviruses cause gastrointestinal disease in many species. Little is known about its prevalence and importance in goats. Objective Identify the etiology, demographics, and clinical features of an outbreak of diarrhea in adult goats. Hypothesis Bovine coronavirus (BCoV) PCR would detect viral material in feces of goats in the herds involved in the diarrhea outbreak. Animals Twelve herds with 4 to 230 adult goats were affected. Goats sampled for fecal PCR were ≥1‐year‐old: 25 from affected herds and 6 from a control herd. Methods This is a cross‐sectional descriptive study of an outbreak of diarrheal disease in adult goats. BCoV PCR primers for the spike (S) or nucleocapsid (N) proteins were used to test fecal material from affected goats. The N protein sequencing and phylogenetic analysis was performed. Herd records and owner surveys were used to characterize morbidity, clinical signs, and treatment. Results In 2 affected herds 18/25 of animals had at least 1 positive BCoV PCR test. Goats from affected herds were significantly more likely to be PCR positive than the control herd (OR 8.75, 95% CI 1.11‐104, P = .05). The most common clinical signs were change in fecal consistency (19/20) and decreased milk production (14/15). Phylogenetic analysis of the N protein showed this virus was closely related to a bovine‐like coronavirus isolated from a giraffe. Conclusions and Clinical Importance Bovine coronavirus primers detected nucleic acids of the N and S proteins in feces of goats in affected herds. Coronavirus shedding frequency was temporally associated with the outbreak.
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Affiliation(s)
- Fauna Leah Smith
- Graduate Group in Integrative Pathobiology, Center for Immunology and Infectious Disease, University of California, Davis, Davis, California, USA
| | - Meera C Heller
- Department of Medicine and Epidemiology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Beate M Crossley
- Department of Medicine and Epidemiology, University of California Davis School of Veterinary Medicine, Davis, California, USA.,California Animal Health and Food Safety Laboratory System, Davis, California, USA
| | - Kristin A Clothier
- California Animal Health and Food Safety Laboratory System, Davis, California, USA.,Department of Pathology, Microbiology, and Immunology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Mark L Anderson
- California Animal Health and Food Safety Laboratory System, Davis, California, USA.,Department of Pathology, Microbiology, and Immunology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Samantha S Barnum
- School of Veterinary Medicine, University of California, Davis, California, USA
| | - Nicola Pusterla
- Department of Medicine and Epidemiology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Joan D Rowe
- Department of Population, Health & Reproduction, University of California, Davis, California, USA
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11
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Korath ADJ, Janda J, Untersmayr E, Sokolowska M, Feleszko W, Agache I, Adel Seida A, Hartmann K, Jensen‐Jarolim E, Pali‐Schöll I. One Health: EAACI Position Paper on coronaviruses at the human-animal interface, with a specific focus on comparative and zoonotic aspects of SARS-CoV-2. Allergy 2022; 77:55-71. [PMID: 34180546 PMCID: PMC8441637 DOI: 10.1111/all.14991] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/24/2021] [Indexed: 12/15/2022]
Abstract
The latest outbreak of a coronavirus disease in 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), evolved into a worldwide pandemic with massive effects on health, quality of life, and economy. Given the short period of time since the outbreak, there are several knowledge gaps on the comparative and zoonotic aspects of this new virus. Within the One Health concept, the current EAACI position paper dwells into the current knowledge on SARS-CoV-2's receptors, symptoms, transmission routes for human and animals living in close vicinity to each other, usefulness of animal models to study this disease and management options to avoid intra- and interspecies transmission. Similar pandemics might appear unexpectedly and more frequently in the near future due to climate change, consumption of exotic foods and drinks, globe-trotter travel possibilities, the growing world population, the decreasing production space, declining room for wildlife and free-ranging animals, and the changed lifestyle including living very close to animals. Therefore, both the society and the health authorities need to be aware and well prepared for similar future situations, and research needs to focus on prevention and fast development of treatment options (medications, vaccines).
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Affiliation(s)
- Anna D. J. Korath
- Comparative MedicineInteruniversity Messerli Research InstituteUniversity of Veterinary Medicine and Medical University ViennaViennaAustria
| | - Jozef Janda
- Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Eva Untersmayr
- Institute of Pathophysiology and Allergy ResearchCenter of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF),University of ZurichZurichSwitzerland
| | - Wojciech Feleszko
- Department of Paediatric Allergy and PulmonologyThe Medical University of WarsawWarsawPoland
| | | | - Ahmed Adel Seida
- Department of Microbiology and ImmunologyFaculty of Veterinary MedicineCairo UniversityCairoEgypt
| | - Katrin Hartmann
- Medizinische KleintierklinikZentrum für Klinische TiermedizinLMUMunichGermany
| | - Erika Jensen‐Jarolim
- Comparative MedicineInteruniversity Messerli Research InstituteUniversity of Veterinary Medicine and Medical University ViennaViennaAustria
- Institute of Pathophysiology and Allergy ResearchCenter of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
| | - Isabella Pali‐Schöll
- Comparative MedicineInteruniversity Messerli Research InstituteUniversity of Veterinary Medicine and Medical University ViennaViennaAustria
- Institute of Pathophysiology and Allergy ResearchCenter of Pathophysiology, Infectiology and ImmunologyMedical University of ViennaViennaAustria
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12
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Zhu Q, Su M, Li Z, Wang X, Qi S, Zhao F, Li L, Guo D, Feng L, Li B, Sun D. Epidemiological survey and genetic diversity of bovine coronavirus in Northeast China. Virus Res 2021; 308:198632. [PMID: 34793872 DOI: 10.1016/j.virusres.2021.198632] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
Abstract
In 2020, to trace the prevalence and evolution of bovine coronavirus (BCoV) in China, a total of 1383 samples (1016 fecal samples and 367 nasal swab samples) were collected from 1016 cattle exhibiting diarrhea symptoms on dairy farms and beef cattle farms in Heilongjiang Province, Northeast China. All samples were subjected to reverse transcription-polymerase chain reaction (RT-PCR) detection of the BCoV N gene, followed by an analysis of its epidemiology and genetic evolution. The results indicated that of the 1016 diarrhea-affected cattle, 15.45% (157/1016) were positive for BCoV, in which positive rates of the fecal and nasal swab samples were 12.20% (124/1016) and 21.53% (79/367), respectively. Of the 367 cattle whose nasal swab samples were collected, the BCoV positive rate of the corresponding fecal samples was 15.26% (56/367). BCoV infection was significantly associated with age, farming pattern, cattle type, farm latitude, sample type, and clinical symptom (p < 0.05). Of the 203 BCoV-positive samples, 20 spike (S) genes were successfully sequenced. The 20 identified BCoV strains shared nucleotide homologies of 97.7-100.0%, and their N-terminal domain of S1 subunit (S1-NTD: residues 15-298) differed genetically from the reference strains of South Korea and Europe. The 20 identified BCoV strains were clustered in the Asia-North America group (GII group) in the global strain-based phylogenetic tree and formed three clades in the Chinese strain-based phylogenetic tree. The HLJ/HH-10/2020 strain was clustered into the Europe group (GI group) in the S1-NTD-based phylogenetic tree, exhibiting N146/I, D148/G, and L154/F mutations that affect the S protein structure. Of the identified BCoV strains, one potential recombination event occurred between the HLJ/HH-20/2020 and HLJ/HH-10/2020 strains, which led to the generation of the recombinant BCV-AKS-01 strain. A selective pressure analysis on the S protein revealed one positively selected site (Asn509) among the 20 identified BCoV strains located inside the putative receptor binding domain (residues 326-540). These data provide a greater understanding of the epidemiology and evolution of BCoV in China.
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Affiliation(s)
- Qinghe Zhu
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China; Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences, Qiqihar 161000, China
| | - Mingjun Su
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Zijian Li
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Xiaoran Wang
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Shanshan Qi
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Feiyu Zhao
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Lu Li
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Donghua Guo
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China
| | - Li Feng
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Bin Li
- Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Dongbo Sun
- Laboratory for the Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, No. 5 Xinfeng Road, Sartu District, Daqing 163319, China.
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13
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Rastogi A, Padhi A, Syed S, Keshan P, Gupta E. Mapping the footprints of COVID-19 pandemic. J Family Med Prim Care 2021; 10:2467-2476. [PMID: 34568121 PMCID: PMC8415656 DOI: 10.4103/jfmpc.jfmpc_2361_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/16/2021] [Accepted: 05/03/2021] [Indexed: 01/01/2023] Open
Abstract
The new member of the coronavirus family created havoc in the world in few days of its discovery and was declared as a pandemic by March 2020. The enveloped, single-stranded RNA virus was first identified in a patient with dry cough, pain, and weakness for the past1 week with unknown etiology in Wuhan. The coronavirus soon spread across the globe in the next few weeks. To curb the spread of coronavirus, stringent measures such as lockdown and social distancing were enforced resulted in a declining of cases in various countries. However, unlocking, relaxation of preventive measures, and changing human behaviors led to a drastic increase in the number of COVID-19 cases resulting in the second wave of transmission. This resulted in reimposing of lockdown measures in countries such as Nepal, Italy, France, Netherland, and Germany. At present, the virus has affected over 110.7 million peoples and over 2.4 million deaths across the world, with India having the second-highest number of COVID-19 cases, following the United States of America. Furthermore, a cross-sectional view of the disease states several new strains being reported across the globe at one end and at another end there is rolling out of vaccine against COVID-19. There is still uncertainty related to curbing of the pandemic as effect of vaccine on new strains is undetermined. Thus, it is important to understand the transforming epidemiology of the virus as it helps in planning necessary steps for physicians and policymakers. The present review summarizes the updated information primarily about the epidemiology of COVID-19, from initiation to the present scenario.
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Affiliation(s)
- Aayushi Rastogi
- Department of Epidemiology, Project ILBS-ECHO, New Delhi, India
| | - Abhishek Padhi
- Department of Microbiology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Sabin Syed
- Department of Program Coordinator, Project ILBS-ECHO, New Delhi, India
| | - Pranav Keshan
- Program Associate, Project ILBS-ECHO, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Ekta Gupta
- Department of Clinical Virology, Project ILBS-ECHO, New Delhi, India
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14
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Bovine coronavirus infections in Turkey: molecular analysis of the full-length spike gene sequences of viruses from digestive and respiratory infections. Arch Virol 2021; 166:2461-2468. [PMID: 34212242 PMCID: PMC8247624 DOI: 10.1007/s00705-021-05147-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 05/03/2021] [Indexed: 11/25/2022]
Abstract
Bovine coronavirus (BCoV) can be spread by animal activity. Although cattle farming is widespread in Turkey, there are few studies of BCoV. The aim of this study was to evaluate the current situation regarding BCoV in Turkey. This is the first study reporting the full-length nucleotide sequences of BCoV spike (S) genes in Turkey. Samples were collected from 119 cattle with clinical signs of respiratory (n = 78) or digestive tract (n = 41) infection on different farms located across widely separated provinces in Turkey. The samples were screened for BCoV using RT-nested PCR targeting the N gene, which identified BCoV in 35 samples (9 faeces and 26 nasal discharge). RT-PCR analysis of the S gene produced partial/full-length S gene sequences from 11 samples (8 faeces and 3 nasal discharge samples). A phylogenetic tree of the S gene sequences was made to analyze the genetic relationships among BCoVs from Turkey and other countries. The results showed that the local strains present in faeces and nasal discharge samples had many different amino acid changes. Some of these changes were shown in previous studies to be critical for tropism. This study provides new data on BCoV in Turkey that will be valuable in designing effective vaccine approaches and control strategies.
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15
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Zappulli V, Ferro S, Bonsembiante F, Brocca G, Calore A, Cavicchioli L, Centelleghe C, Corazzola G, De Vreese S, Gelain ME, Mazzariol S, Moccia V, Rensi N, Sammarco A, Torrigiani F, Verin R, Castagnaro M. Pathology of Coronavirus Infections: A Review of Lesions in Animals in the One-Health Perspective. Animals (Basel) 2020; 10:E2377. [PMID: 33322366 PMCID: PMC7764021 DOI: 10.3390/ani10122377] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/04/2020] [Accepted: 12/09/2020] [Indexed: 12/13/2022] Open
Abstract
Coronaviruses (CoVs) are worldwide distributed RNA-viruses affecting several species, including humans, and causing a broad spectrum of diseases. Historically, they have not been considered a severe threat to public health until two outbreaks of COVs-related atypical human pneumonia derived from animal hosts appeared in 2002 and in 2012. The concern related to CoVs infection dramatically rose after the COVID-19 global outbreak, for which a spill-over from wild animals is also most likely. In light of this CoV zoonotic risk, and their ability to adapt to new species and dramatically spread, it appears pivotal to understand the pathophysiology and mechanisms of tissue injury of known CoVs within the "One-Health" concept. This review specifically describes all CoVs diseases in animals, schematically representing the tissue damage and summarizing the major lesions in an attempt to compare and put them in relation, also with human infections. Some information on pathogenesis and genetic diversity is also included. Investigating the lesions and distribution of CoVs can be crucial to understand and monitor the evolution of these viruses as well as of other pathogens and to further deepen the pathogenesis and transmission of this disease to help public health preventive measures and therapies.
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Affiliation(s)
- Valentina Zappulli
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Silvia Ferro
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Federico Bonsembiante
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
- Department of Animal Medicine, Productions and Health, University of Padua, Legnaro, 35020 Padua, Italy
| | - Ginevra Brocca
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Alessandro Calore
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Laura Cavicchioli
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Cinzia Centelleghe
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Giorgia Corazzola
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Steffen De Vreese
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
- Laboratory of Applied Bioacoustics, Technical University of Catalunya, BarcelonaTech, Vilanova i la Geltrù, 08800 Barcelona, Spain
| | - Maria Elena Gelain
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Sandro Mazzariol
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Valentina Moccia
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Nicolò Rensi
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Alessandro Sammarco
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
- Department of Neurology and Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Filippo Torrigiani
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Ranieri Verin
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
| | - Massimo Castagnaro
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro, 35020 Padua, Italy; (V.Z.); (F.B.); (G.B.); (A.C.); (L.C.); (C.C.); (G.C.); (S.D.V.); (M.E.G.); (S.M.); (V.M.); (N.R.); (A.S.); (F.T.); (R.V.); (M.C.)
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16
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Fenizia C, Biasin M, Cetin I, Vergani P, Mileto D, Spinillo A, Gismondo MR, Perotti F, Callegari C, Mancon A, Cammarata S, Beretta I, Nebuloni M, Trabattoni D, Clerici M, Savasi V. Analysis of SARS-CoV-2 vertical transmission during pregnancy. Nat Commun 2020; 11:5128. [PMID: 33046695 PMCID: PMC7552412 DOI: 10.1038/s41467-020-18933-4] [Citation(s) in RCA: 253] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 09/18/2020] [Indexed: 12/18/2022] Open
Abstract
The impact of SARS-CoV-2 infection during gestation remains unclear. Here, we analyse the viral genome on maternal and newborns nasopharyngeal swabs, vaginal swabs, maternal and umbilical cord plasma, placenta and umbilical cord biopsies, amniotic fluids and milk from 31 mothers with SARS-CoV-2 infection. In addition, we also test specific anti-SARS-CoV-2 antibodies and expression of genes involved in inflammatory responses in placentas, and in maternal and umbilical cord plasma. We detect SARS-CoV-2 genome in one umbilical cord blood and in two at-term placentas, in one vaginal mucosa and in one milk specimen. Furthermore, we report the presence of specific anti-SARS-CoV-2 IgM and IgG antibodies in one umbilical cord blood and in one milk specimen. Finally, in the three documented cases of vertical transmission, SARS-CoV-2 infection was accompanied by a strong inflammatory response. Together, these data support the hypothesis that in utero SARS-CoV-2 vertical transmission, while low, is possible. These results might help defining proper obstetric management of COVID-19 pregnant women, or putative indications for mode and timing of delivery.
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MESH Headings
- Adolescent
- Adult
- Antibodies, Viral/analysis
- Betacoronavirus/genetics
- Betacoronavirus/immunology
- Betacoronavirus/isolation & purification
- COVID-19
- Coronavirus Infections/diagnosis
- Coronavirus Infections/pathology
- Coronavirus Infections/transmission
- Coronavirus Infections/virology
- Female
- Genome, Viral
- Humans
- Infant, Newborn
- Infectious Disease Transmission, Vertical
- Inflammation
- Middle Aged
- Pandemics
- Pneumonia, Viral/diagnosis
- Pneumonia, Viral/pathology
- Pneumonia, Viral/transmission
- Pneumonia, Viral/virology
- Pregnancy
- Pregnancy Complications, Infectious/diagnosis
- Pregnancy Complications, Infectious/pathology
- Pregnancy Complications, Infectious/virology
- SARS-CoV-2
- Young Adult
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Affiliation(s)
- Claudio Fenizia
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Mara Biasin
- Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Irene Cetin
- Department of Woman, Mother and Neonate Buzzi Children's Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, Milan, Italy
| | - Patrizia Vergani
- Department of Maternal Fetal Medicine, Fondazione MBBM, San Gerardo Hospital, University of Milan-Bicocca, Monza, Italy
| | - Davide Mileto
- Clinical Microbiology, Virology and Bio-emergence Diagnosis, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Arsenio Spinillo
- Department of Obstetrics and Gynecology, IRCCS Fondazione Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Maria Rita Gismondo
- Clinical Microbiology, Virology and Bio-emergence Diagnosis, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Francesca Perotti
- Department of Obstetrics and Gynecology, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - Clelia Callegari
- Department of Maternal Fetal Medicine, Fondazione MBBM, San Gerardo Hospital, University of Milan-Bicocca, Monza, Italy
| | - Alessandro Mancon
- Clinical Microbiology, Virology and Bio-emergence Diagnosis, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Selene Cammarata
- Unit of Obstetrics and Gynecology, ASST Fatebenefratelli-Sacco, Department of Biological and Clinical Sciences, University of Milan, Milan, Italy
| | - Ilaria Beretta
- Division of Infectious Diseases, San Gerardo Hospital, ASST Monza, Monza, Italy
| | - Manuela Nebuloni
- Pathology Unit, ASST Fatebenfretalli-Sacco, Department of Biological and Clinical Sciences, University of Milan, Milan, Italy
| | - Daria Trabattoni
- Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy
| | - Mario Clerici
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
- IRCCS Fondazione don Carlo Gnocchi, Milan, Italy
| | - Valeria Savasi
- Unit of Obstetrics and Gynecology, ASST Fatebenefratelli-Sacco, Department of Biological and Clinical Sciences, University of Milan, Milan, Italy.
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Poudel U, Subedi D, Pantha S, Dhakal S. Animal coronaviruses and coronavirus disease 2019: Lesson for One Health approach. Open Vet J 2020; 10:239-251. [PMID: 33282694 PMCID: PMC7703617 DOI: 10.4314/ovj.v10i3.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/06/2020] [Indexed: 02/02/2023] Open
Abstract
Coronaviruses are a group of enveloped, single-stranded, positive-sense RNA viruses that are broadly classified into alpha, beta, gamma, and delta coronavirus genera based on the viral genome. Coronavirus was not thought to be a significant problem in humans until the outbreak of severe acute respiratory syndrome in 2002, but infections in animals, including pigs, cats, dogs, and poultry, have been problematic for a long time. The outbreak of coronavirus disease 2019 in December 2019 in Wuhan, China, drew special attention towards this virus once again. The intermediate host of this novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is yet to be determined, but it has a very close genomic relationship with the bat coronavirus (Bat-CoV), RaTG13 strain, and the pangolin coronaviruses. As veterinary medicine has a long-term experience dealing with coronaviruses, this could be helpful in better understanding and detecting the origin of SARS-CoV-2 and drive human medicine towards the development of vaccines and antiviral drugs through the collaborative and transdisciplinary approaches of One Health.
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Affiliation(s)
- Uddab Poudel
- Institute of Agriculture and Animal Science (IAAS), Paklihawa Campus, Tribhuvan University, Siddharthanagar, Nepal
| | - Deepak Subedi
- Institute of Agriculture and Animal Science (IAAS), Paklihawa Campus, Tribhuvan University, Siddharthanagar, Nepal
| | - Saurav Pantha
- Institute of Agriculture and Animal Science (IAAS), Paklihawa Campus, Tribhuvan University, Siddharthanagar, Nepal
| | - Santosh Dhakal
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
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18
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Soheili M, Haji-allahverdipoor K, Khadem-erfan MB, Baban B, Nikkhoo B, Eliasi A, Nasseri S. Combination of C21 and ARBs with rhACE2 as a therapeutic protocol: A new promising approach for treating ARDS in patients with coronavirus infection. Med J Islam Repub Iran 2020; 34:120. [PMID: 33316002 PMCID: PMC7722962 DOI: 10.34171/mjiri.34.120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Coronavirus disease 2019 (COVID-19) is caused by a new severe acute respiratory syndrome Coronavirus. COVID-19 patients are at risk for acute respiratory distress syndrome and death from respiratory failure. Methods: In this study the complete genome of the SARS-CoV-2 reference sequence, geologically isolated types, and Coronavirus related to human diseases were compared by the Molecular Phylogenetic Maximum Likelihood method. The secondary and tertiary structures of the main protease of SARS-CoV were defined as the most similar viruses to SARS-CoV-2, aligned with chimera software. Therefore, considering ineffective antiviral medications used for SARS-CoV and the importance of preventing acute respiratory distress syndrome as the main cause of mortality, 2 strategies were adopted to acquire the most effective drug combination. Results: The results of phylogenic analysis showed that SARS-CoV is the most similar virus to SARS-CoV-2. The secondary structure and superimposing of tertiary structure did not show a significant difference between SARS and SARS-CoV-2 3C-like main protease and the root means square deviation between Cα atoms did not support the difference between the 2 protein structures. Thus, these 2 mechanisms were fostered in accordance with the correlation between acute respiratory distress syndrome-related Coronavirus, angiotensin-converting enzyme 2 on one side and the possible treatments for reducing the respiratory side effects on the other. The analysis of renin-angiotensin system as well as the tested drugs applied to acute respiratory distress syndrome cases, indicated that angiotensin II receptor blockers, angiotensin-converting enzyme inhibitors, and C21 as nonpeptide agonist might possess a promising modality of treatment for acute respiratory distress syndrome. Furthermore, implementing recombinant human ACE2 as a competitive receptor might be an effective way to trap and chelate the SARS-CoV-2 particles. Conclusion: The data suggest that combination therapy of angiotensin II receptor blockers and C21 could be a potential pharmacologic regimen to control and reduce acute respiratory distress syndrome. Moreover, rhACE2 can be recommended as an effective protective antiviral therapy in the treatment of COVID-19 and its complications.
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Affiliation(s)
- Marzieh Soheili
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Kaveh Haji-allahverdipoor
- Department of Biotechnology and Plant Breeding, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohamad Bagher Khadem-erfan
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Babak Baban
- Department of Oral Biology and Diagnostic Sciences, DCG, Augusta University, Augusta GA, USA
| | - Bahram Nikkhoo
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Pathology, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Anwar Eliasi
- Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sherko Nasseri
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
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De Luca D, Rava L, Nadel S, Tissieres P, Gawronski O, Perkins E, Chidini G, Tingay DG. The EPICENTRE (ESPNIC Covid pEdiatric Neonatal Registry) initiative: background and protocol for the international SARS-CoV-2 infections registry. Eur J Pediatr 2020; 179:1271-1278. [PMID: 32440887 PMCID: PMC7242019 DOI: 10.1007/s00431-020-03690-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 12/13/2022]
Abstract
The outbreak of SARS-CoV-2 is the worst healthcare emergency of this century, and its impact on pediatrics and neonatology is still largely unknown. The European Society for Pediatric and Neonatal Intensive Care (ESPNIC) launched the EPICENTRE (ESPNIC Covid pEdiatric Neonatal Registry) international, multicenter, and multidisciplinary initiative to study the epidemiology, clinical course, and outcomes of pediatric and neonatal SARS-CoV-2 infections. EPICENTRE background and aims are presented together with protocol details. EPICENTRE is open to centers all over the world, and this will allow to provide a pragmatic picture of the epidemic, with a particular attention to pediatric and neonatal critical care issues.Conclusions: EPICENTRE will allow researchers to clarify the epidemiology, clinical presentation, and outcomes of pediatric and neonatal SARS-CoV-2 infection, refining its clinical management and hopefully providing new insights for clinicians. What is Known: • COVID19 is the new disease caused by SARS-CoV-2 infection and is spreading around the globe. • Majority of data available about SARS-CoV-2 infections originates from adult patients. What is New: • EPICENTRE is the first international, multicenter, multidisciplinary, meta-data driven, hospital-based, online, prospective cohort registry dedicated to neonatal and pediatric SARS-CoV-2 infections. • EPICENTRE will allow to understand epidemiology and physiopathology of COVID19.
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Affiliation(s)
- Daniele De Luca
- Division of Pediatrics and Neonatal Critical Care, Paris Saclay University Hospital-APHP & Paris Saclay University, Paris, France
| | - Lucilla Rava
- Unit of Clinical Epidemiology, “Bambino Gesu” Children Hospital-IRCCS, Rome, Italy
| | - Simon Nadel
- Paediatric Intensive Care Unit, Imperial College Healthcare NHS Trust, London, UK
| | - Pierre Tissieres
- Division of Pediatric Critical Care, Paris Saclay University Hospital-APHP & Paris Saclay University, Paris, France
| | - Orsola Gawronski
- Continuing Education and Nursing Research Unit, “Bambino Gesu” Children Hospital-IRCCS, Rome, Italy
| | - Elisabeth Perkins
- Neonatal Research, Murdoch Children’s Research Institute, Melbourne, VIC Australia
| | - Giovanna Chidini
- Pediatric Intensive Care Unit, Department of Anesthesia, Intensive Care and Emergency, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - David G. Tingay
- Neonatal Research, Murdoch Children’s Research Institute, Melbourne, VIC Australia
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20
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Decaro N, Lorusso A. Novel human coronavirus (SARS-CoV-2): A lesson from animal coronaviruses. Vet Microbiol 2020; 244:108693. [PMID: 32402329 PMCID: PMC7195271 DOI: 10.1016/j.vetmic.2020.108693] [Citation(s) in RCA: 231] [Impact Index Per Article: 57.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/10/2020] [Accepted: 04/10/2020] [Indexed: 12/16/2022]
Abstract
The recent pandemic caused by the novel human coronavirus, referrred to as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), not only is having a great impact on the health care systems and economies in all continents but it is also causing radical changes of common habits and life styles. The novel coronavirus (CoV) recognises, with high probability, a zoonotic origin but the role of animals in the SARS-CoV-2 epidemiology is still largely unknown. However, CoVs have been known in animals since several decades, so that veterinary coronavirologists have a great expertise on how to face CoV infections in animals, which could represent a model for SARS-CoV-2 infection in humans. In the present paper, we provide an up-to-date review of the literature currently available on animal CoVs, focusing on the molecular mechanisms that are responsible for the emergence of novel CoV strains with different antigenic, biologic and/or pathogenetic features. A full comprehension of the mechanisms driving the evolution of animal CoVs will help better understand the emergence, spreading, and evolution of SARS-CoV-2.
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Affiliation(s)
- Nicola Decaro
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy.
| | - Alessio Lorusso
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise 'G. Caporale', Teramo, Italy
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21
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Pardon B, Callens J, Maris J, Allais L, Van Praet W, Deprez P, Ribbens S. Pathogen-specific risk factors in acute outbreaks of respiratory disease in calves. J Dairy Sci 2020; 103:2556-2566. [PMID: 31954585 PMCID: PMC7094370 DOI: 10.3168/jds.2019-17486] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/14/2019] [Indexed: 11/25/2022]
Abstract
Respiratory tract infections (bovine respiratory disease) are a major concern in calf rearing. The objective of this study was to identify pathogen-specific risk factors associated with epidemic respiratory disease in calves. A cross-sectional study was conducted, involving 128 outbreaks (29 dairy, 58 dairy-mixed, and 41 beef) in Belgium (2016–2018). A semiquantitative PCR for 7 respiratory pathogens was done on a pooled nonendoscopic bronchoalveolar lavage sample for each herd. Potential risk factors were collected by questionnaire and derived from the national cattle registration databank. Most outbreaks occurred between October and March, and single and multiple viral infections were detected in 58.6% (75/128) and 13.3% (17/128), respectively. Bovine coronavirus (BCV) was the most frequently isolated virus (38.4%), followed by bovine respiratory syncytial virus (bRSV; 29.4%) and parainfluenzavirus type 3 (PI-3; 8.1%). Mycoplasma bovis, Mannheimia haemolytica, Pasteurella multocida, and Histophilus somni were detected in 33.3, 41.2, 89.1, and 36.4% of the herds, respectively. Specific risk factors for BCV detection were detection of M. haemolytica [odds ratio (OR) = 2.8 (95% confidence interval = 1.1–7.5)], increasing herd size [OR = 1.3 (1.0–1.8) for each increase with 100 animals] and detection of BCV by antigen ELISA on feces in calves in the last year [OR = 3.6 (1.2–11.1)]. A seasonal effect was shown for bRSV only {more in winter compared with autumn [OR = 10.3 (2.8–37.5)]}. Other factors associated with bRSV were PI-3 detection [OR = 13.4 (2.1–86.0)], prevalence of calves with respiratory disease [OR = 1.02 (1.00–1.04) per 1% increase], and number of days with respiratory signs before sampling [OR = 0.99 (0.98–0.99) per day increase]. Next to its association with BCV, M. haemolytica was more frequently detected in herds with 5 to 10 animals per pen [OR = 8.0 (1.4–46.9)] compared with <5 animals, and in herds with sawdust as bedding [OR = 18.3 (1.8–191.6)]. Also, for H. somni, housing on sawdust was a risk factor [OR = 5.2 (1.2–23.0)]. Purchase of cattle [OR = 2.9 (1.0–8.0)] and housing of recently purchased animals in the same airspace [OR = 5.0 (1.5–16.5)] were risk factors for M. bovis. This study identified pathogen-specific risk factors that might be useful for the development of customized control and prevention and for the design of decision support tools to justify antimicrobial use by predicting the most likely pathogen before sampling results are available.
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Affiliation(s)
- B Pardon
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
| | - J Callens
- Animal Health Service Flanders (DGZ Vlaanderen), Industrielaan 29, 8820 Torhout, Belgium
| | - J Maris
- Boehringer Ingelheim Belgium, Arianelaan 16, 1200 Sint-Lambrechts-Wolume, Belgium
| | - L Allais
- Animal Health Service Flanders (DGZ Vlaanderen), Industrielaan 29, 8820 Torhout, Belgium
| | - W Van Praet
- Animal Health Service Flanders (DGZ Vlaanderen), Industrielaan 29, 8820 Torhout, Belgium
| | - P Deprez
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
| | - S Ribbens
- Animal Health Service Flanders (DGZ Vlaanderen), Industrielaan 29, 8820 Torhout, Belgium
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Abstract
Coronaviruses (CoVs) produce a wide spectrum of disease syndromes in different mammalian and avian host species. These viruses are well-recognized for their ability to change tissue tropism, to hurdle the interspecies barriers and to adapt ecological variations. It is predicted that the inherent genetic diversity of CoVs caused by accumulation of point mutations and high frequency of homologous recombination is the principal determinant of these competences. Several CoVs (e.g. Severe acute respiratory syndrome-CoV, Middle East respiratory syndrome-CoV) have been recorded to cross the interspecies barrier, inducing different disease conditions in variable animal hosts. Bovine CoV (BCoV) is a primary cause of gastroenteritis and respiratory disease in cattle calves, winter dysentery in lactating cows and shipping fever pneumonia in feedlot cattle. Although it has long been known as a restrictive cattle pathogen, CoVs that are closely related to BCoV have been recognized in dogs, humans and in other ruminant species. Biologic, antigenic and genetic analyses of the so-called ‘bovine-like CoVs’ proposed classification of these viruses as host-range variants rather than distinct virus species. In this review, the different bovine-like CoVs that have been identified in domesticated ruminants (water buffalo, sheep, goat, dromedary camel, llama and alpaca) and wild ruminants (deer, wild cattle, antelopes, giraffes and wild goats) are discussed in terms of epidemiology, transmission and virus characteristics. The presented data denote the importance of these viruses in the persistence of BCoV in nature, spread to new geographical zones, and continuous emergence of disease epidemics in cattle farms.
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Kanno T, Ishihara R, Hatama S, Uchida I. A long-term animal experiment indicating persistent infection of bovine coronavirus in cattle. J Vet Med Sci 2018; 80:1134-1137. [PMID: 29780039 PMCID: PMC6068295 DOI: 10.1292/jvms.18-0050] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
A long-term animal experiment involving inoculation with bovine coronavirus (BCoV) was conducted to verify its persistent infection in cattle. Three colostrum-deprived Holstein calves were
housed separately in individual rooms of a high-containment facility and inoculated with the BCoV strain Kumamoto/1/07. Until the end of the experiment (1,085, 700 and 280 days,
respectively), viral RNAs were detected sporadically by RT-PCR and nested PCR from plasma, nasal discharge, and feces. Seroconversion and titer changes were validated by hemagglutination
inhibition tests and neutralization tests. Among the samples, nasal discharge showed a higher viral positivity than feces, which seemed to be associated with positive detection in the
plasma. These data demonstrate the existence of persistent infection of BCoV in the respiratory tissues of cattle.
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Affiliation(s)
- Toru Kanno
- Division of Pathology and Pathophysiology, National Institute of Animal Health, 4 Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-0045, Japan
| | - Ryoko Ishihara
- Division of Pathology and Pathophysiology, National Institute of Animal Health, 4 Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-0045, Japan
| | - Shinichi Hatama
- Division of Pathology and Pathophysiology, National Institute of Animal Health, 4 Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-0045, Japan.,Current address: Division of Viral Disease and Epidemiology, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
| | - Ikuo Uchida
- Division of Pathology and Pathophysiology, National Institute of Animal Health, 4 Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-0045, Japan.,Current address: Division of Bacterial and Parasitic Disease, National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan
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24
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Abuelo A, Perez‐Santos M. A winter dysentery (coronavirus infection) outbreak in a dairy herd in Galicia (northwestern Spain). VETERINARY RECORD CASE REPORTS 2016. [DOI: 10.1136/vetreccr-2016-000328] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Angel Abuelo
- School of Animal & Veterinary SciencesCharles Sturt UniversityWagga WaggaNew South WalesAustralia
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25
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Oma VS, Tråvén M, Alenius S, Myrmel M, Stokstad M. Bovine coronavirus in naturally and experimentally exposed calves; viral shedding and the potential for transmission. Virol J 2016; 13:100. [PMID: 27296861 PMCID: PMC4906604 DOI: 10.1186/s12985-016-0555-x] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 06/03/2016] [Indexed: 12/15/2022] Open
Abstract
Background Bovine coronavirus (BCoV) is a widely distributed pathogen, causing disease and economic losses in the cattle industry worldwide. Prevention of virus spread is impeded by a lack of basic knowledge concerning viral shedding and transmission potential in individual animals. The aims of the study were to investigate the duration and quantity of BCoV shedding in feces and nasal secretions related to clinical signs, the presence of virus in blood and tissues and to test the hypothesis that seropositive calves are not infectious to naïve in-contact calves three weeks after BCoV infection. Methods A live animal experiment was conducted, with direct contact between animal groups for 24 h as challenge procedure. Four naïve calves were commingled with a group of six naturally infected calves and sequentially euthanized. Two naïve sentinel calves were commingled with the experimentally exposed group three weeks after exposure. Nasal swabs, feces, blood and tissue samples were analyzed for viral RNA by RT-qPCR, and virus isolation was performed on nasal swabs. Serum was analyzed for BCoV antibodies. Results The calves showed mild general signs, and the most prominent signs were from the respiratory system. The overall clinical score corresponded well with the shedding of viral RNA the first three weeks after challenge. General depression and cough were the signs that correlated best with shedding of BCoV RNA, while peak respiratory rate and peak rectal temperature appeared more than a week later than the peak shedding. Nasal shedding preceded fecal shedding, and the calves had detectable amounts of viral RNA intermittently in feces through day 35 and in nasal secretions through day 28, however virus isolation was unsuccessful from day six and day 18 from the two calves investigated. Viral RNA was not detected in blood, but was found in lymphatic tissue through day 42 after challenge. Although the calves were shedding BCoV RNA 21 days after infection the sentinel animals were not infected. Conclusions Prolonged shedding of BCoV RNA can occur, but detection of viral RNA does not necessarily indicate a transmission potential. The study provides valuable information with regard to producing scientifically based biosecurity advices. Electronic supplementary material The online version of this article (doi:10.1186/s12985-016-0555-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Veslemøy Sunniva Oma
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Ullevålsvegen 72, 0454, Oslo, Norway.
| | - Madeleine Tråvén
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, 75007, Uppsala, Sweden
| | - Stefan Alenius
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, 75007, Uppsala, Sweden
| | - Mette Myrmel
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences, Ullevålsvegen 72, 0454, Oslo, Norway
| | - Maria Stokstad
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Ullevålsvegen 72, 0454, Oslo, Norway
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Decaro N, Campolo M, Mari V, Desario C, Lucente M, Lorusso E, Campanile G, Buonavoglia C. Severe enteritis in Italian Mediterranean buffalo calves associated with a novel bovine-like coronavirus. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2007.s2.854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ribeiro J, Lorenzetti E, Alfieri AF, Alfieri AA. Molecular detection of bovine coronavirus in a diarrhea outbreak in pasture-feeding Nellore steers in southern Brazil. Trop Anim Health Prod 2015; 48:649-53. [PMID: 26712361 PMCID: PMC7088806 DOI: 10.1007/s11250-015-0975-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 12/08/2015] [Indexed: 11/30/2022]
Abstract
Worldwide diarrhea outbreaks in cattle herds are more frequently detected in calves being that diarrhea outbreaks in adult cattle are not common. Winter dysentery (WD) is a bovine coronavirus (BCoV) enteric infection that is more reported in Northern hemisphere. Seasonal outbreaks of WD in adult cattle occur mainly in dairy cows. WD has not been described in beef cattle herds of tropical countries. This study describes the molecular detection of BCoV in a diarrhea outbreak in beef cattle steers (Nellore) raised on pasture in Parana, southern Brazil. During the outbreak, the farm had about 600 fattening steers. Watery and bloody diarrhea unresponsive to systemic broad-spectrum antibiotic therapy reveals a morbidity rate of approximately 15 %. The BCoV N gene was identified in 42.9 % (6/14) of the diarrheic fecal samples evaluated by semi-nested polymerase chain reaction (SN-PCR) technique. Other enteric microorganisms occasionally identified in adult cattle and evaluated in this study such as bovine groups A, B, and C rotavirus, bovine viral diarrhea virus, bovine torovirus, aichivirus B, and Eimeria sp. were not identified in the fecal samples. To the best knowledge of the authors, this is the first description of the BCoV diagnosis in fecal samples collected in a diarrhea outbreak in adult beef cattle grazing in the grass in a tropical country.
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Affiliation(s)
- Juliane Ribeiro
- Laboratory of Animal Virology and Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid-Campus Universitário, PO Box 10011, CEP 86057-970, Londrina, Parana, Brazil
| | - Elis Lorenzetti
- Laboratory of Animal Virology and Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid-Campus Universitário, PO Box 10011, CEP 86057-970, Londrina, Parana, Brazil
| | - Alice Fernandes Alfieri
- Laboratory of Animal Virology and Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid-Campus Universitário, PO Box 10011, CEP 86057-970, Londrina, Parana, Brazil
| | - Amauri Alcindo Alfieri
- Laboratory of Animal Virology and Multi-User Animal Health Laboratory, Molecular Biology Unit, Department of Veterinary Preventive Medicine, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid-Campus Universitário, PO Box 10011, CEP 86057-970, Londrina, Parana, Brazil.
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28
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Bok M, Miño S, Rodriguez D, Badaracco A, Nuñes I, Souza SP, Bilbao G, Louge Uriarte E, Galarza R, Vega C, Odeon A, Saif LJ, Parreño V. Molecular and antigenic characterization of bovine Coronavirus circulating in Argentinean cattle during 1994-2010. Vet Microbiol 2015; 181:221-9. [PMID: 26520931 PMCID: PMC7185509 DOI: 10.1016/j.vetmic.2015.10.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 08/28/2015] [Accepted: 10/13/2015] [Indexed: 12/11/2022]
Abstract
Detection rate of BCoV was statistically higher in dairy than in beef calves. Argentinean strains are distant from the Mebus strain included in local vaccines. In vitro cross-protection between Arg95 field strain and Mebus reference strain.
Bovine coronavirus (BCoV) is an important viral pathogen associated with neonatal calf diarrhea. Our aim was to investigate the incidence of BCoV in diarrhea outbreaks in beef and dairy herds from Argentina during 1994–2010. A total of 5.365 fecal samples from diarrheic calves were screened for BCoV diagnosis by ELISA. The virus was detected in 1.71% (92/5365) of the samples corresponding to 5.95% (63/1058) of the diarrhea cases in 239 beef and 324 dairy farms. The detection rate of BCoV was significantly higher in dairy than in beef herds: 12.13% (29/239) vs. 4.32% (14/324) respectively. Phylogenetic analysis of the hypervariable S1 region of seven representative samples (from different husbandry systems, farm locations and years of sampling) indicated that BCoV strains circulating in Argentinean beef and dairy herds formed a cluster distinct from other geographical regions. Interestingly, Argentinean strains are distantly related (at both the nucleotide and amino acid levels) with the Mebus historic reference BCoV strain included in the vaccines currently available in Argentina. However, Mebus-induced antibodies were capable of neutralizing the BCoV Arg95, a field strain adapted to grow in vitro, and vice versa, indicating that both strains belong to the same CoV serotype reported in cattle. This work represents the first large survey describing BCoV circulation in Argentinean cattle.
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Affiliation(s)
- M Bok
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina
| | - S Miño
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina; State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, The Chinese Academy of Agriculture Sciences, Harbin, 150001 Heilongjiang, China
| | - D Rodriguez
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina
| | - A Badaracco
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina
| | - I Nuñes
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine, University of São Paulo, Brazil
| | - S P Souza
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine, University of São Paulo, Brazil
| | - G Bilbao
- Laboratory of Animal Health, EEA INTA- Balcarce, Buenos Aires, Argentina
| | | | - R Galarza
- EEA, INTA Rafaela, Santa Fe, Argentina
| | - C Vega
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina
| | - A Odeon
- Laboratory of Animal Health, EEA INTA- Balcarce, Buenos Aires, Argentina
| | - L J Saif
- Food Animal Health Research Program, The Ohio State University, Wooster, OH, USA
| | - V Parreño
- Virology Institute, CICVyA, National Institute of Agricultural Technology (INTA), Buenos Aires, Argentina.
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Moore SJ, O'Dea MA, Perkins N, O'Hara AJ. Estimation of nasal shedding and seroprevalence of organisms known to be associated with bovine respiratory disease in Australian live export cattle. J Vet Diagn Invest 2015; 27:6-17. [PMID: 25525134 DOI: 10.1177/1040638714559741] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The prevalence of organisms known to be associated with bovine respiratory disease (BRD) was investigated in cattle prior to export. A quantitative reverse transcription polymerase chain reaction assay was used to detect nucleic acids from the following viruses and bacteria in nasal swab samples: Bovine coronavirus (BoCV; Betacoronavirus 1), Bovine herpesvirus 1 (BoHV-1), Bovine viral diarrhea virus 1 (BVDV-1), Bovine respiratory syncytial virus (BRSV), Bovine parainfluenza virus 3 (BPIV-3), Histophilus somni, Mycoplasma bovis, Mannheimia haemolytica, and Pasteurella multocida. Between 2010 and 2012, nasal swabs were collected from 1,484 apparently healthy cattle destined for export to the Middle East and Russian Federation. In addition, whole blood samples from 334 animals were tested for antibodies to BoHV-1, BRSV, BVDV-1, and BPIV-3 using enzyme-linked immunosorbent assay. The nasal prevalence of BoCV at the individual animal level was 40.1%. The nasal and seroprevalence of BoHV-1, BRSV, BVDV-1, and BPIV-3 was 1.0% and 39%, 1.2% and 46%, 3.0% and 56%, and 1.4% and 87%, respectively. The nasal prevalence of H. somni, M. bovis, M. haemolytica, and P. multocida was 42%, 4.8%, 13.4%, and 26%, respectively. Significant differences in nasal and seroprevalence were detected between groups of animals from different geographical locations. The results of the current study provide baseline data on the prevalence of organisms associated with BRD in Australian live export cattle in the preassembly period. This data could be used to develop strategies for BRD prevention and control prior to loading.
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Affiliation(s)
- S Jo Moore
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Mark A O'Dea
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Nigel Perkins
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
| | - Amanda J O'Hara
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, Western Australia, Australia (Moore, O'Hara)Department of Agriculture and Food Western Australia, Australia (O'Dea)AusVet Animal Health Services, Toowoomba, Queensland, Australia (Perkins)
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Wolff C, Emanuelson U, Ohlson A, Alenius S, Fall N. Bovine respiratory syncytial virus and bovine coronavirus in Swedish organic and conventional dairy herds. Acta Vet Scand 2015; 57:2. [PMID: 25582919 PMCID: PMC4300160 DOI: 10.1186/s13028-014-0091-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 12/17/2014] [Indexed: 11/17/2022] Open
Abstract
Background Infections with bovine respiratory syncytial virus (BRSV) and bovine coronavirus (BoCV) are endemic to the cattle populations in most countries, causing respiratory and/or enteric disease. It has been demonstrated that herds can remain free from these infections for several years also in high prevalence areas. Organically managed (OM) dairy herds have been shown to have lower seroprevalence of both viruses compared to conventionally managed (CM) herds. The objective of this study was to challenge the hypothesis of a lower occurrence of BRSV and BoCV in OM compared to CM dairy herds. In November 2011, May 2012 and May 2013 milk samples from four homebred primiparous cows were collected in 75 to 65 OM and 69 to 62 CM herds. The antibody status regarding BRSV and BoCV was analysed with commercial indirect ELISAs. Herds were classified as positive if at least one individual sample was positive. Results The prevalence of positive herds ranged from 73.4% to 82.3% for BRSV and from 76.8% to 85.3% for BoCV among OM and CM herds, over the three sampling occasions. There was no statistically significant difference between OM and CM herds at any sampling occasion. The incidence risk of newly infected herds did not differ statistically between OM and CM herds at any sampling occasion, neither for BRSV nor for BoCV. The incidence of herds turning sero-negative between samplings corresponded to the incidence of newly infected. Bulk tank milk (BTM) samples were also sampled in the herds and analysed. Several herds were negative on individual samples but positive in BTM. Herd-level data on production, health and reproduction were retrieved from VÄXA Sweden and the study herds were representative of the source population. Conclusion There was no difference in prevalence of or incidence risk for BRSV or BoCV between Swedish OM and CM herds. Because the incidence of herds becoming seropositive was balanced by herds becoming seronegative it should be possible to lower the prevalence of these two infections among Swedish dairy cattle herds if biosecurity is improved. Electronic supplementary material The online version of this article (doi:10.1186/s13028-014-0091-x) contains supplementary material, which is available to authorized users.
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A multigene approach for comparing genealogy of Betacoronavirus from cattle and horses. ScientificWorldJournal 2013; 2013:349702. [PMID: 24348152 PMCID: PMC3855977 DOI: 10.1155/2013/349702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 10/03/2013] [Indexed: 11/17/2022] Open
Abstract
Gastroenteritis is one of the leading causes of morbidity and mortality among young and newborn animals and is often caused by multiple intestinal infections, with rotavirus and bovine coronavirus (BCoV) being the main viral causes in cattle. Given that BCoV is better studied than equine coronaviruses and given the possibility of interspecies transmission of these viruses, this research was designed to compare the partial sequences of the spike glycoprotein (S), hemagglutinin-esterase protein (HE), and nucleoprotein (N) genes from coronaviruses from adult cattle with winter dysentery, calves with neonatal diarrhea, and horses. To achieve this, eleven fecal samples from dairy cows with winter dysentery, three from calves, and two from horses, all from Brazil, were analysed. It could be concluded that the enteric BCoV genealogy from newborn and adult cattle is directly associated with geographic distribution patterns, when S and HE genes are taken into account. A less-resolved genealogy exists for the HE and N genes in cattle, with a trend for an age-related segregation pattern. The coronavirus strains from horses revealed Betacoronavirus sequences indistinguishable from those found in cattle, a fact previously unknown.
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Bidokhti MRM, Tråvén M, Krishna NK, Munir M, Belák S, Alenius S, Cortey M. Evolutionary dynamics of bovine coronaviruses: natural selection pattern of the spike gene implies adaptive evolution of the strains. J Gen Virol 2013; 94:2036-2049. [PMID: 23804565 DOI: 10.1099/vir.0.054940-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Coronaviruses demonstrate great potential for interspecies transmission, including zoonotic outbreaks. Although bovine coronavirus (BCoV) strains are frequently circulating in cattle farms worldwide, causing both enteric and respiratory disease, little is known about their genomic evolution. We sequenced and analysed the full-length spike (S) protein gene of 33 BCoV strains from dairy and feedlot farms collected during outbreaks that occurred from 2002 to 2010 in Sweden and Denmark. Amino acid identities were >97 % for the BCoV strains analysed in this work. These strains formed a clade together with Italian BCoV strains and were highly similar to human enteric coronavirus HECV-4408/US/94. A high similarity was observed between BCoV, canine respiratory coronavirus (CRCoV) and human coronavirus OC43 (HCoV-OC43). Molecular clock analysis of the S gene sequences estimated BCoV and CRCoV diverged from a common ancestor in 1951, while the time of divergence from a common ancestor of BCoV and HCoV-OC43 was estimated to be 1899. BCoV strains showed the lowest similarity to equine coronavirus, placing the date of divergence at the end of the eighteenth century. Two strongly positive selection sites were detected along the receptor-binding subunit of the S protein gene: spanning amino acid residues 109-131 and 495-527. By contrast, the fusion subunit was observed to be under negative selection. The selection pattern along the S glycoprotein implies adaptive evolution of BCoVs, suggesting a successful mechanism for BCoV to continuously circulate among cattle and other ruminants without disappearance.
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Affiliation(s)
- Mehdi R M Bidokhti
- Division of Ruminant Medicine and Veterinary Epidemiology, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Madeleine Tråvén
- Division of Ruminant Medicine and Veterinary Epidemiology, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Neel K Krishna
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, 700 West Olney Road, Norfolk, VA 23507-1696, USA
| | - Muhammad Munir
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden.,Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Box 7028, SE-751 89 Uppsala, Sweden
| | - Sándor Belák
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden.,Department of Virology, Immunobiology and Parasitology, National Veterinary Institute, Box 7028, SE-751 89 Uppsala, Sweden
| | - Stefan Alenius
- Division of Ruminant Medicine and Veterinary Epidemiology, Department of Clinical Sciences, Swedish University of Agricultural Sciences, Box 7054, SE-750 07 Uppsala, Sweden
| | - Martí Cortey
- Department of Immunology, The Pirbright Institute, Ash Road, Pirbright GU24 0NF, UK
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Lukšić I, Kearns PK, Scott F, Rudan I, Campbell H, Nair H. Viral etiology of hospitalized acute lower respiratory infections in children under 5 years of age -- a systematic review and meta-analysis. Croat Med J 2013; 54:122-34. [PMID: 23630140 PMCID: PMC3641872 DOI: 10.3325/cmj.2013.54.122] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 04/10/2013] [Indexed: 01/26/2023] Open
Abstract
AIM To estimate the proportional contribution of influenza viruses (IV), parainfluenza viruses (PIV), adenoviruses (AV), and coronaviruses (CV) to the burden of severe acute lower respiratory infections (ALRI). METHODS The review of the literature followed PRISMA guidelines. We included studies of hospitalized children aged 0-4 years with confirmed ALRI published between 1995 and 2011. A total of 51 studies were included in the final review, comprising 56091 hospitalized ALRI episodes. RESULTS IV was detected in 3.0% (2.2%-4.0%) of all hospitalized ALRI cases, PIV in 2.7% (1.9%-3.7%), and AV in 5.8% (3.4%-9.1%). CV are technically difficult to culture, and they were detected in 4.8% of all hospitalized ALRI patients in one study. When respiratory syncytial virus (RSV) and less common viruses were included, at least one virus was detected in 50.4% (40.0%-60.7%) of all hospitalized severe ALRI episodes. Moreover, 21.9% (17.7%-26.4%) of these viral ALRI were mixed, including more than one viral pathogen. Among all severe ALRI with confirmed viral etiology, IV accounted for 7.0% (5.5%-8.7%), PIV for 5.8% (4.1%-7.7%), and AV for 8.8% (5.3%-13.0%). CV was found in 10.6% of virus-positive pneumonia patients in one study. CONCLUSIONS This article provides the most comprehensive analysis of the contribution of four viral causes to severe ALRI to date. Our results can be used in further cost-effectiveness analyses of vaccine development and implementation for a number of respiratory viruses.
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Affiliation(s)
- Ivana Lukšić
- Ivana Luksic, Institute of Publich Health Dr. Andrija Štampar, Department of Microbiology, Mirogojska cesta 16, 10000 Zagreb, Croatia.
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Tracing the transmission of bovine coronavirus infections in cattle herds based on S gene diversity. Vet J 2012; 193:386-90. [PMID: 22750286 PMCID: PMC7110563 DOI: 10.1016/j.tvjl.2011.12.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 11/22/2011] [Accepted: 12/20/2011] [Indexed: 11/21/2022]
Abstract
Bovine coronavirus (BCoV) is found worldwide and causes respiratory infections and diarrhoea in calves and adult cattle. In order to investigate the molecular epidemiology of BCoV, 27 reverse transcription polymerase chain reaction (RT-PCR) positive samples from 25 cattle herds in different parts of Sweden were analysed. A 1038-nucleotide fragment was PCR amplified and directly sequenced. The analysed BCoV strains showed a high sequence identity, regardless of whether they were obtained from outbreaks of respiratory disease or diarrhoea or from calves or adult cattle. Circulation of an identical BCoV strain during a 4-month period was demonstrated in calves in one dairy herd. In a regional epizootic of winter dysentery in Northern Sweden, highly similar BCoV strains were detected. In the Southern and Central regions, several genotypes of BCoV circulated contemporaneously, indicating that in these regions, which had a higher density of cattle than the Northern regions, more extensive transmission of the virus was occurring. Identical BCoV sequences supported the epidemiological data that inter-herd contact through purchased calves was important. Swedish BCoV strains unexpectedly showed a high homology with recently detected Italian strains. This study shows that molecular analysis of the spike (S) glycoprotein gene of BCoV can be a useful tool to support or rule out suspected transmission routes.
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Martínez N, Brandão PE, de Souza SP, Barrera M, Santana N, de Arce HD, Pérez LJ. Molecular and phylogenetic analysis of bovine coronavirus based on the spike glycoprotein gene. INFECTION GENETICS AND EVOLUTION 2012; 12:1870-8. [PMID: 22634277 PMCID: PMC7106151 DOI: 10.1016/j.meegid.2012.05.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 05/15/2012] [Accepted: 05/17/2012] [Indexed: 11/29/2022]
Abstract
Bovine coronavirus has been associated with diarrhoea in newborn calves, winter dysentery in adult cattle and respiratory tract infections in calves and feedlot cattle. In Cuba, the presence of BCoV was first reported in 2006. Since then, sporadic outbreaks have continued to occur. This study was aimed at deepening the knowledge of the evolution, molecular markers of virulence and epidemiology of BCoV in Cuba. A total of 30 samples collected between 2009 and 2011 were used for PCR amplification and direct sequencing of partial or full S gene. Sequence comparison and phylogenetic studies were conducted using partial or complete S gene sequences as phylogenetic markers. All Cuban bovine coronavirus sequences were located in a single cluster supported by 100% bootstrap and 1.00 posterior probability values. The Cuban bovine coronavirus sequences were also clustered with the USA BCoV strains corresponding to the GenBank accession numbers EF424621 and EF424623, suggesting a common origin for these viruses. This phylogenetic cluster was also the only group of sequences in which no recombination events were detected. Of the 45 amino acid changes found in the Cuban strains, four were unique.
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Affiliation(s)
- Nadia Martínez
- Centro Nacional de Sanidad Agropecuaria, La Habana, Cuba
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Decaro N, Sciarretta R, Lucente MS, Mari V, Amorisco F, Colaianni ML, Cordioli P, Parisi A, Lelli R, Buonavoglia C. A nested PCR approach for unambiguous typing of pestiviruses infecting cattle. Mol Cell Probes 2011; 26:42-6. [PMID: 22119481 PMCID: PMC7127541 DOI: 10.1016/j.mcp.2011.11.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 11/04/2011] [Accepted: 11/11/2011] [Indexed: 11/04/2022]
Abstract
An atypical pestivirus (‘Hobi’-like pestivirus, putative bovine viral diarrhoea 3, BVDV-3) was identified firstly in contaminated foetal calf serum batches and isolated subsequently from an outbreak of respiratory disease in a cattle herd in Italy. The isolation of the novel pestivirus from animals affected clinically posed concerns about the validity of BVDV eradication programs, considering that ‘Hobi’-like pestivirus (BVDV-3) is undetected or mistyped by the molecular diagnostic tools currently employed. In this paper, the development of a nested PCR (nPCR) assay for unambiguous typing of all bovine pestiviruses is reported. The assay consisted of a first-round amplification using an oligonucleotide pair which binds to conserved sequences located in the 5′ untranslated region and capsid gene, followed by a heminested PCR using virus-specific forward primers. The assay performances were evaluated analytically, showing good sensitivity and specificity. By analysis of 100 BVDV-positive samples typed using a nPCR assay discriminating ruminant pestiviruses, five samples recognised previously as BVDV-2 were not typed when submitted to the new assay (n = 2) or reacted as ‘Hobi’-like pestivirus BVDV-3 (n = 3). Sequence analysis of the first-round amplification products showed that the untyped strains were border disease viruses, whereas the other three strains were true ‘Hobi’-like viruses. The development of a molecular assay able to identify simultaneously all bovine pestiviruses known currently will help warrant biosafety of live vaccines and other biological products and assess the molecular epidemiology of ‘Hobi’-like pestivirus, thus leading to the improvement of the eradication programs through unambiguous typing of pestiviruses infecting cattle.
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Affiliation(s)
- Nicola Decaro
- Department of Veterinary Public Health, Faculty of Veterinary Medicine of Bari, Strada per Casamassima Km 3, 70010 Valenzano, Bari, Italy.
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Laureyns J, Pardon B, Letellier C, Deprez P. Periparturient infection with bovine viral diarrhea virus type 1 causes hemorrhagic proctocolitis in a cow. THE CANADIAN VETERINARY JOURNAL = LA REVUE VETERINAIRE CANADIENNE 2011; 52:1135-1139. [PMID: 22467972 PMCID: PMC3174514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
After 3 cows of a dairy herd had died from severe hemorrhagic diarrhea, a 4th sick cow was transported to the clinic. Blood analyses revealed the complete absence of white blood cells, the presence of a type 1b strain of bovine viral diarrhea virus (BVDV), and seroconversion to BVDV.
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Affiliation(s)
- Jozef Laureyns
- Department of Reproduction, Obstetrics, and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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Alkan F, Ozkul A, Bilge-Dagalp S, Karaoglu T, Oguzoglu TC, Caliskan E, Burgu I. The detection and genetic characterization based on the S1 gene region of BCoVs from respiratory and enteric infections in Turkey. Transbound Emerg Dis 2011; 58:179-85. [PMID: 26353053 PMCID: PMC7159375 DOI: 10.1111/j.1865-1682.2010.01194.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigated bovine coronavirus (BCoV) as an etiological agent in cattle with clinical respiratory and digestive signs using 147 feces and 199 nasal swab samples. A total of 18 test samples (16 feces and 2 nasal swap samples) were detected positive by ELISA and/or RT-PCR targeting the BCoV N gene. The partial S1 gene regions of BCoVs (An-4 and An-11) detected in feces samples from two herd-mate dairy calves were compared. Virological and serological results indicated that BCoVs are widespread in Turkey and are likely etiological agents in diarrhea cases in calves.
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Affiliation(s)
- F Alkan
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey.
| | - A Ozkul
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
| | - S Bilge-Dagalp
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
| | - T Karaoglu
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
| | - T C Oguzoglu
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
| | - E Caliskan
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
| | - I Burgu
- Faculty of Veterinary Medicine, Department of Virology Diskapi, Ankara University, Ankara, Turkey Ministry of Agriculture and Rural Affairs, Central Veterinary Control and Research Institute, Etlik, Ankara, Turkey
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Decaro N, Cirone F, Mari V, Nava D, Tinelli A, Elia G, Di Sarno A, Martella V, Colaianni ML, Aprea G, Tempesta M, Buonavoglia C. Characterisation of bubaline coronavirus strains associated with gastroenteritis in water buffalo (Bubalus bubalis) calves. Vet Microbiol 2010; 145:245-51. [PMID: 20483547 PMCID: PMC7117158 DOI: 10.1016/j.vetmic.2010.04.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Revised: 04/08/2010] [Accepted: 04/12/2010] [Indexed: 11/18/2022]
Abstract
Recently, a coronavirus strain (179/07-11) was isolated from water buffalo (Bubalus bubalis) and the virus which displayed a strict genetic and biological relatedness with bovine coronavirus (BCoV) was referred to as bubaline coronavirus (BuCoV). Here, we report the characterisation of four BuCoVs strains identified in the faeces or intestinal contents of water buffalo calves with acute gastroenteritis. Single BuCoV infections were detected in all but one cases from which two clostridia species were also isolated. Sequence and phylogenetic analyses of the 5' end of the spike-protein gene showed that three BuCoVs were closely related to the prototype strain 179/07-11, whereas the fourth isolate (339/08-C) displayed a higher genetic identity to recent BCoV reference strains. Three strains adapted to the in vitro grow on human rectal tumour cells were also evaluated for their ability to replicate in a bovine cell line (Madin Darby bovine kidney) and to cause haemagglutination of chicken erythrocytes and all displayed biological properties similar to those already described for the prototype BuCoV. The present report shows that albeit genetically heterogeneous, the different BuCoV strains possess a common biological pattern which is different from most BCoV and BCoV-like isolates.
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Affiliation(s)
- Nicola Decaro
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Strada per Casamassima Km 3, Valenzano, Bari, Italy.
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Abstract
Bovine coronaviruses, like other animal coronaviruses, have a predilection for intestinal and respiratory tracts. The viruses responsible for enteric and respiratory symptoms are closely related antigenically and genetically. Only 4 bovine coronavirus isolates have been completely sequenced and thus, the information about the genetics of the virus is still limited. This article reviews the clinical syndromes associated with bovine coronavirus, including pneumonia in calves and adult cattle, calf diarrhea, and winter dysentery; diagnostic methods; prevention using vaccination; and treatment, with adjunctive immunotherapy.
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Affiliation(s)
- Mélanie J Boileau
- Food Animal Medicine and Surgery, Department of Veterinary Clinical Sciences, Oklahoma State University Center for Veterinary Health Sciences, Stillwater, OK 74078, USA.
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The M, E, and N structural proteins of the severe acute respiratory syndrome coronavirus are required for efficient assembly, trafficking, and release of virus-like particles. J Virol 2008. [PMID: 18753196 DOI: 10.1128/jvi.01052‐08] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The production of virus-like particles (VLPs) constitutes a relevant and safe model to study molecular determinants of virion egress. The minimal requirement for the assembly of VLPs for the coronavirus responsible for severe acute respiratory syndrome in humans (SARS-CoV) is still controversial. Recent studies have shown that SARS-CoV VLP formation depends on either M and E proteins or M and N proteins. Here we show that both E and N proteins must be coexpressed with M protein for the efficient production and release of VLPs by transfected Vero E6 cells. This suggests that the mechanism of SARS-CoV assembly differs from that of other studied coronaviruses, which only require M and E proteins for VLP formation. When coexpressed, the native envelope trimeric S glycoprotein is incorporated onto VLPs. Interestingly, when a fluorescent protein tag is added to the C-terminal end of N or S protein, but not M protein, the chimeric viral proteins can be assembled within VLPs and allow visualization of VLP production and trafficking in living cells by state-of-the-art imaging technologies. Fluorescent VLPs will be used further to investigate the role of cellular machineries during SARS-CoV egress.
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The M, E, and N structural proteins of the severe acute respiratory syndrome coronavirus are required for efficient assembly, trafficking, and release of virus-like particles. J Virol 2008; 82:11318-30. [PMID: 18753196 DOI: 10.1128/jvi.01052-08] [Citation(s) in RCA: 336] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The production of virus-like particles (VLPs) constitutes a relevant and safe model to study molecular determinants of virion egress. The minimal requirement for the assembly of VLPs for the coronavirus responsible for severe acute respiratory syndrome in humans (SARS-CoV) is still controversial. Recent studies have shown that SARS-CoV VLP formation depends on either M and E proteins or M and N proteins. Here we show that both E and N proteins must be coexpressed with M protein for the efficient production and release of VLPs by transfected Vero E6 cells. This suggests that the mechanism of SARS-CoV assembly differs from that of other studied coronaviruses, which only require M and E proteins for VLP formation. When coexpressed, the native envelope trimeric S glycoprotein is incorporated onto VLPs. Interestingly, when a fluorescent protein tag is added to the C-terminal end of N or S protein, but not M protein, the chimeric viral proteins can be assembled within VLPs and allow visualization of VLP production and trafficking in living cells by state-of-the-art imaging technologies. Fluorescent VLPs will be used further to investigate the role of cellular machineries during SARS-CoV egress.
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Detection of an antigenic group 2 coronavirus in an adult alpaca with enteritis. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2008; 15:1629-32. [PMID: 18716008 DOI: 10.1128/cvi.00232-08] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Antigenic group 2 coronavirus was detected in a fecal sample of an adult alpaca by reverse transcription-PCR. The presence of alpaca coronavirus (ApCoV) in the small intestine was demonstrated by immune histochemistry with an antinucleocapsid monoclonal antibody that reacts with group 2 coronaviruses. Other common causes of diarrhea in adult camelids were not detected. We conclude that nutritional stress may have predisposed the alpaca to severe ApCoV infection.
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Decaro N, Elia G, Campolo M, Desario C, Mari V, Radogna A, Colaianni ML, Cirone F, Tempesta M, Buonavoglia C. Detection of bovine coronavirus using a TaqMan-based real-time RT-PCR assay. J Virol Methods 2008; 151:167-171. [PMID: 18579223 PMCID: PMC7112840 DOI: 10.1016/j.jviromet.2008.05.016] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2008] [Revised: 05/08/2008] [Accepted: 05/14/2008] [Indexed: 12/01/2022]
Abstract
A real-time reverse transcriptase-polymerase chain reaction (RT-PCR) for the detection of bovine coronavirus (BCoV) RNA in clinical samples is described. The assay is based on TaqMan technology, consisting of two primers and one probe labeled with the reporter dye 6-carboxyfluorescein that binds selectively to the transmembrane-protein gene of BCoV. The BCoV real-time RT-PCR assay was able to detect the tested BCoV and BCoV-like viruses (canine respiratory coronavirus and bubaline coronavirus), whereas other common viral pathogens of cattle were not recognised by the established oligonucleotide set, thus showing that the test was specific for bovine-like CoVs. The detection limit of the assay was 20 BCoV RNA copies (1-log higher with respect to traditional gel-based RT-PCR) and the reproducibility was satisfactory, thus allowing for a sensitive and accurate measurement of the viral RNA load in clinical samples. Two hundred and twenty clinical specimens (92 rectal, 82 nasal and 46 ocular swabs) were subjected to gel-based and real-time RT-PCR. By conventional amplification, 43 rectal, 54 nasal and 34 ocular samples tested positive, whereas the TaqMan assay was able to detect the BCoV nucleic acid in 49 rectal, 60 nasal and 37 ocular swabs. The rapidity and high throughput of the BCoV TaqMan assay makes this method a powerful tool for a sensitive and specific diagnosis of BCoV infection in cattle.
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Affiliation(s)
- Nicola Decaro
- Department of Public Health and Animal Sciences, Faculty of Veterinary Medicine of Bari, Strada per Casamassima Km 3, 70010 Valenzano, Bari, Italy
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Biological and genetic analysis of a bovine-like coronavirus isolated from water buffalo (Bubalus bubalis) calves. Virology 2007; 370:213-22. [PMID: 17916374 PMCID: PMC7103353 DOI: 10.1016/j.virol.2007.08.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 08/27/2007] [Accepted: 08/29/2007] [Indexed: 11/22/2022]
Abstract
We describe the isolation, biological and genetic characterization of a host-range variant of bovine coronavirus (BCoV) detected in water buffalo (Bubalus bubalis). By conventional and real-time RT-PCR assays, the virus was demonstrated in the intestinal contents of two 20-day-old buffalo calves dead of a severe form of enteritis and in the feces of additional 17 buffalo calves with diarrhea. Virus isolation, hemagglutination and receptor-destroying enzyme activity showed that the buffalo coronavirus (BuCoV) is closely related to BCoV but possesses some different biological properties. Sequence and phylogenetic analyses of the 3' end (9.6 kb) of the BuCoV RNA revealed a genomic organization typical of group 2 coronaviruses. Moreover, the genetic distance between BuCoV and BCoV was proven to be the same or even higher than the distance between other ruminant coronaviruses and BCoV. In conclusion, our data support the existence of a host-range variant of BCoV associated with enteritis in buffaloes.
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