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Nguyen NH, Thi Phuong BN, Nguyen TQ, Do Tien D, Nguyen Thi MD, Nguyen MN. Genotypic diversity of CSFV field strains: A silent risk reduces vaccination efficacy of CSFV vaccines in Vietnam. Virology 2022; 571:39-45. [DOI: 10.1016/j.virol.2022.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 01/07/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
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2
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Zhao Z, Chen X, Chen Y, Li H, Fang K, Chen H, Li X, Qian P. A Self-Assembling Ferritin Nanoplatform for Designing Classical Swine Fever Vaccine: Elicitation of Potent Neutralizing Antibody. Vaccines (Basel) 2021; 9:45. [PMID: 33451123 PMCID: PMC7828615 DOI: 10.3390/vaccines9010045] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/29/2023] Open
Abstract
Protein-based self-assembling nanoplatforms exhibit superior immunogenicity compared with soluble antigens. Here, we present a comprehensive vaccine strategy for displaying classical swine fever virus (CSFV) E2 glycoprotein on the surface of ferritin (fe) nanocages. An E2-specific blocking antibody assay showed that the blocking rates in pE2-fe/Gel02 (84.3%) and a half-dose cohort of E2-fe/Gel02 (81.9%) were significantly higher (p < 0.05) than that in a ferritin-free cohort of pE2/Gel02 (62.7%) at 21 days post immunization (dpi) in vivo. Furthermore, quantitation of neutralizing potency revealed that a highly significant difference (p < 0.001) was observed between the pE2-fe/Gel02 cohort (1:32, equivalent to live-attenuated strain C at 1:32) and the pE2/Gel02 cohort (1:4) at 21 dpi. Moreover, the innate immune cytokines of IL-4 and IFN-γ activated by the half-dose (20 μg) cohort of E2-fe/Gel02 were equivalent to those elicited by the full dose (40 μg) of purified E2 in the pE2/Gel02 cohort at most time points. In conclusion, we successfully obtained an antigen-displaying E2-ferritin nanoplatform and confirmed high ferritin-assisted humoral and cellular immunities. Our results provided a novel paradigm of self-assembling nanovaccine development for the defense and elimination of potentially pandemic infectious viral pathogens.
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Affiliation(s)
- Zekai Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Xinghua Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Yibao Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Kui Fang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Huanchun Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiangmin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Ping Qian
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
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Park Y, Lee S, Kang H, Park M, Min K, Kim NH, Gu S, Kim JK, An DJ, Choe S, Sohn EJ. A classical swine fever virus E2 fusion protein produced in plants elicits a neutralizing humoral immune response in mice and pigs. Biotechnol Lett 2020; 42:1247-1261. [PMID: 32323080 PMCID: PMC7223222 DOI: 10.1007/s10529-020-02892-3] [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: 01/13/2020] [Revised: 04/01/2020] [Accepted: 04/14/2020] [Indexed: 12/03/2022]
Abstract
Classical swine fever (CSF) is one of the most important viral diseases of swine worldwide. Although live or attenuated virus vaccines have been used to control CSFV, it is difficult to distinguish vaccinated pigs from infected pigs; this leads to restrictions on import and export. Subunit vaccines based on the CSFV E2 glycoprotein have been developed using baculovirus or insect cell systems, but some weaknesses remain. Here, we describe production of an E2 recombinant protein using a Nicotiana benthamiana plant expression system. To do this, we took advantage of the ability of the swine Fc domain to increase solubility and stability of the fusion protein and to strengthen immune responses in target animals. N. benthamiana expressed high amounts of pFc2-fused E2 proteins, which were isolated and purified by affinity chromatography to yield a high pure recombinant protein in a cost-effective manner. Native-polyacrylamide gel electrophoresis and size exclusion chromatography confirmed that the pmE2:pFc2 fusion exists as a multimer rather than as a dimer. Injection of recombinant pmE2 protein into mice or piglets generated anti-pmE2 antibodies with efficient neutralizing activity against CSFV. These results suggest that a purified recombinant E2 protein produced in N. benthamiana generates high titers of neutralizing antibodies in vivo; as such, the protein could be developed as a subunit vaccine against CSFV.
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Affiliation(s)
- Youngmin Park
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Sangmin Lee
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Hyangju Kang
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Minhee Park
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Kyungmin Min
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Nam Hyung Kim
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Sungmin Gu
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Jong Kook Kim
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea
| | - Dong-Jun An
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon, 39660, Gyeongbuk, Korea
| | - SeEun Choe
- Virus Disease Division, Animal and Plant Quarantine Agency, Gimcheon, 39660, Gyeongbuk, Korea
| | - Eun-Ju Sohn
- BioApplications Inc., Pohang Techno Park Complex, 394 Jigok-ro Nam-gu, Pohang, Korea.
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Dong H, Su A, Lv D, Ma L, Dong J, Guo N, Ren L, Jiao H, Pang D, Ouyan H. Development of Whole-Porcine Monoclonal Antibodies with Potent Neutralization Activity against Classical Swine Fever Virus from Single B Cells. ACS Synth Biol 2019; 8:989-1000. [PMID: 30935202 DOI: 10.1021/acssynbio.8b00365] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Classical swine fever (CSF) is a highly contagious swine disease that causes devastating economic losses. However, there are few efficacious therapeutic antibodies against the CSF virus (CSFV). Accordingly, we isolated two whole-porcine anti-CSFV neutralizing antibodies (NAbs) directly from single B cells sorted using the conserved linear epitope of the CSFV E2 protein and goat anti-pig IgG. These mAbs, termed HK24 and HK44, can bind to the E2 protein by recognizing sites within the conserved linear epitope of E2. In addition, these two mAbs can detect virus infection with high specificity and possess potent neutralizing activity. HK24 and HK44 protect PK-15 cells from CSFV infections in vitro with potent IC50 values of 9.3 and 0.62 μg/mL, respectively. We anticipate that these antibodies can be used as diagnostic and antiviral agents for CSFV and that the method we describe here will accelerate the production of therapeutic antibodies for other viruses.
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Affiliation(s)
- Haisi Dong
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Ang Su
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Dongmei Lv
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Lerong Ma
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Jianwei Dong
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Nannan Guo
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center (LUMC), 2311 EZ Leiden, The Netherlands
| | - Linzhu Ren
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Huping Jiao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Daxin Pang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
| | - Hongsheng Ouyan
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Science, Jilin University, Changchun 130062, Jilin Province, People’s Republic of China
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Zhang H, Wen W, Zhao Z, Wang J, Chen H, Qian P, Li X. Enhanced protective immunity to CSFV E2 subunit vaccine by using IFN-γ as immunoadjuvant in weaning piglets. Vaccine 2018; 36:7353-7360. [DOI: 10.1016/j.vaccine.2018.10.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 10/03/2018] [Accepted: 10/06/2018] [Indexed: 12/29/2022]
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Madera R, Gong W, Wang L, Burakova Y, Lleellish K, Galliher-Beckley A, Nietfeld J, Henningson J, Jia K, Li P, Bai J, Schlup J, McVey S, Tu C, Shi J. Pigs immunized with a novel E2 subunit vaccine are protected from subgenotype heterologous classical swine fever virus challenge. BMC Vet Res 2016; 12:197. [PMID: 27612954 PMCID: PMC5016919 DOI: 10.1186/s12917-016-0823-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 09/01/2016] [Indexed: 11/17/2022] Open
Abstract
Background Classical swine fever (CSF) or hog cholera is a highly contagious swine viral disease. CSF endemic countries have to use routine vaccination with modified live virus (MLV) vaccines to prevent and control CSF. However, it is impossible to serologically differentiate MLV vaccinated pigs from those infected with CSF virus (CSFV). The aim of this study is to develop a one-dose E2-subunit vaccine that can provide protection against CSFV challenge. We hypothesize that a vaccine consisting of a suitable adjuvant and recombinant E2 with natural conformation may induce a similar level of protection as the MLV vaccine. Results Our experimental vaccine KNB-E2 was formulated with the recombinant E2 protein (Genotype 1.1) expressed by insect cells and an oil-in-water emulsion based adjuvant. 10 pigs (3 weeks old, 5 pigs/group) were immunized intramuscularly with one dose or two doses (3 weeks apart) KNB-E2, and 10 more control pigs were administered normal saline solution only. Two weeks after the second vaccination, all KNB-E2 vaccinated pigs and 5 control pigs were challenged with 5 × 105 TCID50 CSFV Honduras/1997 (Genotype 1.3, 1 ml intramuscular, 1 ml intranasal). It was found that while control pigs infected with CSFV stopped growing and developed high fever (>40 °C), high level CSFV load in blood and nasal fluid, and severe leukopenia 3–14 days post challenge, all KNB-E2 vaccinated pigs continued to grow as control pigs without CSFV exposure, did not show any fever, had low or undetectable level of CSFV in blood and nasal fluid. At the time of CSFV challenge, only pigs immunized with KNB-E2 developed high levels of E2-specific antibodies and anti-CSFV neutralizing antibodies. Conclusions Our studies provide direct evidence that pigs immunized with one dose KNB-E2 can be protected clinically from CSFV challenge. This protection is likely mediated by high levels of E2-specific and anti-CSFV neutralizing antibodies.
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Affiliation(s)
- Rachel Madera
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Wenjie Gong
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA.,Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China
| | - Lihua Wang
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Yulia Burakova
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA.,Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Karen Lleellish
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Amy Galliher-Beckley
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Jerome Nietfeld
- Department of Diagnostic Medicine and Pathobiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Jamie Henningson
- Department of Diagnostic Medicine and Pathobiology, Kansas State University, Manhattan, KS, 66506, USA
| | - Kaimin Jia
- Department of Chemistry, Kansas State University, Manhattan, KS, 66506, USA
| | - Ping Li
- Department of Chemistry, Kansas State University, Manhattan, KS, 66506, USA
| | - Jianfa Bai
- Department of Diagnostic Medicine and Pathobiology, Kansas State University, Manhattan, KS, 66506, USA
| | - John Schlup
- Department of Chemical Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Scott McVey
- United States Department of Agriculture, Agricultural Research Service, Arthropod Borne Animal Disease Research Unit, Manhattan, KS, 66502, USA
| | - Changchun Tu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, China.
| | - Jishu Shi
- Department of Anatomy and Physiology, Kansas State University, Manhattan, KS, 66506, USA.
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Structures and Functions of Pestivirus Glycoproteins: Not Simply Surface Matters. Viruses 2015; 7:3506-29. [PMID: 26131960 PMCID: PMC4517112 DOI: 10.3390/v7072783] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/11/2015] [Accepted: 06/18/2015] [Indexed: 12/21/2022] Open
Abstract
Pestiviruses, which include economically important animal pathogens such as bovine viral diarrhea virus and classical swine fever virus, possess three envelope glycoproteins, namely Erns, E1, and E2. This article discusses the structures and functions of these glycoproteins and their effects on viral pathogenicity in cells in culture and in animal hosts. E2 is the most important structural protein as it interacts with cell surface receptors that determine cell tropism and induces neutralizing antibody and cytotoxic T-lymphocyte responses. All three glycoproteins are involved in virus attachment and entry into target cells. E1-E2 heterodimers are essential for viral entry and infectivity. Erns is unique because it possesses intrinsic ribonuclease (RNase) activity that can inhibit the production of type I interferons and assist in the development of persistent infections. These glycoproteins are localized to the virion surface; however, variations in amino acids and antigenic structures, disulfide bond formation, glycosylation, and RNase activity can ultimately affect the virulence of pestiviruses in animals. Along with mutations that are driven by selection pressure, antigenic differences in glycoproteins influence the efficacy of vaccines and determine the appropriateness of the vaccines that are currently being used in the field.
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Huang YL, Deng MC, Wang FI, Huang CC, Chang CY. The challenges of classical swine fever control: modified live and E2 subunit vaccines. Virus Res 2013; 179:1-11. [PMID: 24211665 DOI: 10.1016/j.virusres.2013.10.025] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 10/22/2013] [Accepted: 10/25/2013] [Indexed: 01/15/2023]
Abstract
Classical swine fever (CSF) is an economically important, highly contagious disease of swine worldwide. CSF is caused by classical swine fever virus (CSFV), and domestic pigs and wild boars are its only natural hosts. The two main strategies used to control CSF epidemic are systematic prophylactic vaccination and a non-vaccination stamping-out policy. This review compares the protective efficacy of the routinely used modified live vaccine (MLV) and E2 subunit vaccines and summarizes the factors that influence the efficacy of the vaccines and the challenges that both vaccines face to CSF control. Although MLV provide earlier and more complete protection than E2 subunit vaccines, it has the drawback of not allowing differentiation between infected and vaccinated animals (DIVA). The marker vaccine of E2 protein with companion discriminatory test to detect antibodies against E(rns) allows DIVA and is a promising strategy for future control and eradication of CSF. Maternal derived antibody (MDA) is the critical factor in impairing the efficacy of both MLV and E2 subunit vaccines, so the well-designed vaccination programs of sows and piglets should be considered together. Because of the antigen variation among various genotypes of CSFV, antibodies raised by either MLV or subunit vaccine neutralize genotypically homologous strains better than heterologous ones. However, although this is not a major concern for MLV as the induced immune responses can protect pigs against the challenge of various genotypes of CSFVs, it is critical for E2 subunit vaccines. It is thus necessary to evaluate whether the E2 subunit vaccine can completely protect against the current prevalent strains in the field. An ideal new generation of vaccine should be able to maintain the high protective efficiency of MLV and overcome the problem of antigenic variations while allowing for DIVA.
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Affiliation(s)
- Yu-Liang Huang
- Animal Health Research Institute, Council of Agriculture, 376 Chung-Cheng Road, Tansui, New Taipei City 25158, Taiwan
| | - Ming-Chung Deng
- Animal Health Research Institute, Council of Agriculture, 376 Chung-Cheng Road, Tansui, New Taipei City 25158, Taiwan
| | - Fun-In Wang
- School of Veterinary Medicine, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chin-Cheng Huang
- Pingtung Agriculture Biotechnology Park, Council of Agriculture, No. 1 Shennong Road, Dehe Village, Changjhih Township, Pingtung County 90846, Taiwan
| | - Chia-Yi Chang
- Animal Health Research Institute, Council of Agriculture, 376 Chung-Cheng Road, Tansui, New Taipei City 25158, Taiwan.
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Luo L, Nishi K, MacLeod E, Sabara MI, Coleman BL, Gubbay JB, Li Y. Expression of recombinant HA1 protein for specific detection of influenza A/H1N1/2009 antibodies in human serum. Microbiol Immunol 2013; 57:77-81. [DOI: 10.1111/j.1348-0421.2012.00517.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 10/11/2012] [Accepted: 10/16/2012] [Indexed: 11/29/2022]
Affiliation(s)
- Lizhong Luo
- National Centre for Foreign Animal Disease; Canadian Food Inspection Agency; R3E 3M4
| | - Krista Nishi
- National Centre for Foreign Animal Disease; Canadian Food Inspection Agency; R3E 3M4
| | - Erin MacLeod
- National Centre for Foreign Animal Disease; Canadian Food Inspection Agency; R3E 3M4
| | - Marta I. Sabara
- National Centre for Foreign Animal Disease; Canadian Food Inspection Agency; R3E 3M4
| | - Brenda L Coleman
- Department of Microbiology; Mount Sinai Hospital; 600 University Avenue, M5G 1×5
| | - Jonathan B Gubbay
- Ontario Agency for Health Promotion & Protection; 81 Resources Road, Toronto, Ontario, M9P 3T1; Canada
| | - Yan Li
- National Microbiology Laboratory; Public Health Agency of Canada; 1015 Arlington Street, Winnipeg, Manitoba, R3E 3R2
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