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Davganyam B, Otgontogtokh N, Nergui D, Tserendorj A, Temuujin U, Sharav T, Guugandaa N, Bayasgalan C, Chultemdorj T, Tserenochir E. Rapid on-site detection of avian influenza virus in wild bird using portable devices and sentinel birds. Int J Infect Dis 2020. [DOI: 10.1016/j.ijid.2020.09.1405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Temuujin U, Tserendorj A, Fujiki J, Sakoda Y, Tseren-Ochir EO, Okamatsu M, Matsuno K, Sharav T, Horiuchi M, Umemura T, Chultemdorj T. The first isolation and identification of canine parvovirus (CPV) type 2c variants during 2016-2018 genetic surveillance of dogs in Mongolia. Infect Genet Evol 2019; 73:269-275. [PMID: 31078727 DOI: 10.1016/j.meegid.2019.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/05/2019] [Accepted: 05/07/2019] [Indexed: 01/10/2023]
Abstract
Canine parvovirus type 2 (CPV-2) causes a highly contagious and fatal disease, developing into acute hemorrhagic enteritis and myocarditis, in dogs. CPV-2 has evolved, generating antigenic variants CPV-2a/2b/2c that are globally distributed. However, investigating molecular characterization of CPV-2 among dog populations in Mongolia has been limited. Herein, 42 stool samples were collected from dogs with clinical signs of infection, and conventional PCR assays were employed to detect CPV-2 in 23. Our results indicated that during 2016-2018, the new CPV-2a and 2c subtypes were detected in 34.7% of the samples, and the new CPV-2b subtype was detected in 30.4% of samples. VP2 protein sequence analysis and next-generation sequencing of the complete viral genome confirmed these antigenic types. However, sequence analysis indicated new and unreported mutations, Pro580Thr, and Tyr584His in the CPV-2c subtype. From a PCR-positive sample, CPV-2c was successfully isolated, and we performed an immunofluorescence assay for antigen detection. Additionally, we performed genetic characterization and phylogenetic analysis to investigate genetic diversity among isolates from the region, resulting in high CPV-2 genetic diversity in the Mongolian dog population. Striking similarities were also observed between sequences of the strains isolated from Mongolia and China over a similar time span.
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Affiliation(s)
- Uyangaa Temuujin
- Department of Infectious Disease and Microbiology, School of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Zaisan 17024, Mongolia.
| | - Ariunaa Tserendorj
- Department of Infectious Disease and Microbiology, School of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Zaisan 17024, Mongolia
| | - Jumpei Fujiki
- Laboratory of Veterinary Biochemistry, Department of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Erdene-Ochir Tseren-Ochir
- Department of Infectious Disease and Microbiology, School of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Zaisan 17024, Mongolia
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Tumenjargal Sharav
- Department of Infectious Disease and Microbiology, School of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Zaisan 17024, Mongolia
| | - Motohiro Horiuchi
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Takashi Umemura
- JICA Expert in School of Veterinary Medicine, Mongolian University of Life Sciences, Mongolia
| | - Tungalag Chultemdorj
- Department of Infectious Disease and Microbiology, School of Veterinary Medicine, Mongolian University of Life Sciences, Ulaanbaatar, Zaisan 17024, Mongolia.
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Bayasgalan C, Chultemdorj T, Roth F, Zinsstag J, Hattendorf J, Badmaa B, Argamjav B, Schelling E. Risk factors of brucellosis seropositivity in Bactrian camels of Mongolia. BMC Vet Res 2018; 14:342. [PMID: 30424746 PMCID: PMC6234668 DOI: 10.1186/s12917-018-1664-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 10/23/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND More information on brucellosis epidemiology in Bactrian camels is needed due to their growing economic and livelihood importance for herders and renewed efforts in Mongolia to eliminate brucellosis through mass vaccination of ruminants excluding camels. Brucellosis prevalence in camels increased over the past two decades. Random multi-stage cluster surveys were done in the Eastern provinces of Dornod and Sukhbaatar in 2013 and 2014 and in the Southern & Western provinces of Dornogobi, Umnogobi and Khovd in 2014 and 2015. A total of 1822 camels, 1155 cattle, and 3023 small ruminant sera were collected and tested with the Rose Bengal Test. In addition, 195 vaginal swabs and 250 milk samples for bacteriological culture were taken from livestock with history of abortion. RESULTS The overall apparent seroprevalence in camels was 2.3% (95% confidence interval 1.6-3.3). The main risk factor for camel seropositivity was being in an Eastern province when compared to Southern & Western provinces (odds ratio 13.2, 95% CI 5.3-32.4). Camel seroprevalences were stable over the two consecutive survey years, despite introduction of ruminant vaccination: 5.7% (95% CI 3.1-10.2%) and 5.8% (3.3-10.1%) in Eastern provinces and 0.4% (0.2-1.2%) and 0.5% (0.1-2.0%) in Southern & Western provinces. We isolated Brucella abortus from camels and cattle. Camel seropositivity was associated to keeping cattle together with camels. Monitoring of vaccination campaigns showed that coverage in cattle was insufficient because animals could not be adequately restrained. CONCLUSIONS The present study reveals that brucellosis is present with important seroprevalence in Mongolian camels and was endemic in Eastern provinces. Camel herd seropositivity was most closely associated to infection in cattle. Longer term monitoring is needed to assess whether camel seroprevalance decreases with ongoing vaccination in Mongolia. This should be coupled with further confirmation on Brucella spp. isolates. To date, only Brucella abortus was isolated, but camels are also susceptible to Brucella melitensis. Clear verbal and written information on disease prevention in livestock and household members is important, particularly for remote camel herders who had only moderate knowledge on brucellosis epidemiology and preventive measures.
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Affiliation(s)
- Chimedtseren Bayasgalan
- School of Veterinary Medicine, Mongolian University of Life Sciences, PO Box 17024, Zaisan, Ulaanbaatar, Mongolia
- Swiss Tropical and Public Health Institute, PO Box, CH-4002 Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Tungalag Chultemdorj
- School of Veterinary Medicine, Mongolian University of Life Sciences, PO Box 17024, Zaisan, Ulaanbaatar, Mongolia
| | | | - Jakob Zinsstag
- Swiss Tropical and Public Health Institute, PO Box, CH-4002 Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Jan Hattendorf
- Swiss Tropical and Public Health Institute, PO Box, CH-4002 Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Battsetseg Badmaa
- School of Veterinary Medicine, Mongolian University of Life Sciences, PO Box 17024, Zaisan, Ulaanbaatar, Mongolia
| | - Bayanzul Argamjav
- School of Veterinary Medicine, Mongolian University of Life Sciences, PO Box 17024, Zaisan, Ulaanbaatar, Mongolia
| | - Esther Schelling
- Swiss Tropical and Public Health Institute, PO Box, CH-4002 Basel, Switzerland
- University of Basel, Basel, Switzerland
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Sharav T, Konnai S, Ochirkhuu N, Ts EO, Mekata H, Sakoda Y, Umemura T, Murata S, Chultemdorj T, Ohashi K. Detection and molecular characterization of equine infectious anemia virus in Mongolian horses. J Vet Med Sci 2017; 79:1884-1888. [PMID: 29021424 PMCID: PMC5709569 DOI: 10.1292/jvms.17-0202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The genetic characterization and actual prevalence of EIAV in Mongolian horse in the disease endemic region is currently unknown. Here, 11 of 776 horse serum samples from four Mongolian provinces tested positive on agar gel
immunodiffusion test. Genomic DNA extracted from all seropositive samples was subjected to nested PCR assay. Among these, three samples tested positive with nested PCR assay and were identified by sequencing analysis based on long
termination repeat and tat gene of the virus. Two of the three sequences were identical, with 94.0% identity with the third. These two independent Mongolian EIAV sequences were retained functional motifs, with no
dramatic changes but some variability in the U5 region; they were clustered with genotypes from European countries but not with those from China, U.S.A., or Japan.
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Affiliation(s)
- Tumenjargal Sharav
- Department of Infectious Diseases and Public Health, School of Veterinary Medicine, Mongolian University of Life Science, Khan-Uul district, Zaisan 17042, Ulaanbaatar, Mongolia
| | - Satoru Konnai
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Nyamsuren Ochirkhuu
- Department of Infectious Diseases and Public Health, School of Veterinary Medicine, Mongolian University of Life Science, Khan-Uul district, Zaisan 17042, Ulaanbaatar, Mongolia
| | - Erdene Ochir Ts
- Department of Infectious Diseases and Public Health, School of Veterinary Medicine, Mongolian University of Life Science, Khan-Uul district, Zaisan 17042, Ulaanbaatar, Mongolia
| | - Hirohisa Mekata
- Organization for Promotion of Tenure Track, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan.,Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki 889-2192, Japan
| | - Yoshihiro Sakoda
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Takashi Umemura
- Department of Infectious Diseases and Public Health, School of Veterinary Medicine, Mongolian University of Life Science, Khan-Uul district, Zaisan 17042, Ulaanbaatar, Mongolia
| | - Shiro Murata
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
| | - Tungalag Chultemdorj
- Department of Infectious Diseases and Public Health, School of Veterinary Medicine, Mongolian University of Life Science, Khan-Uul district, Zaisan 17042, Ulaanbaatar, Mongolia
| | - Kazuhiko Ohashi
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Hokkaido 060-0818, Japan
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