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Zaitsev S, Khizhnyakova M, Saltykov Y, Evstifeev V, Khusainov F, Ivanova S, Morozova D, Yakovlev S, Larionova O, Feodorova V. Complete genome sequence of Chlamydia psittaci АМК-16, isolated from a small ruminant in the Middle Volga Region, Russia. Microbiol Resour Announc 2024; 13:e0054323. [PMID: 38534150 PMCID: PMC11080530 DOI: 10.1128/mra.00543-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
We report the complete genome sequence of the Chlamydia psittaci АМК-16, recovered from the aborted caprine fetus during a case of chlamydia infection. This 1,152,497-bp genome with 7,552-bp cryptic plasmid provides novel insights into the genetic diversity of chlamydia agent strains particularly those causing the infection in small ruminants.
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Affiliation(s)
- Sergey Zaitsev
- Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Mariya Khizhnyakova
- Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Yury Saltykov
- Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Vitaliy Evstifeev
- Federal Center for Toxicological, Radiation and Biological Safety, Kazan, Russia
- Kazan State Academy of Veterinary Medicine by N.E. Bauman, Kazan, Russia
| | - Fidail Khusainov
- Federal Center for Toxicological, Radiation and Biological Safety, Kazan, Russia
| | - Svetlana Ivanova
- Federal Center for Toxicological, Radiation and Biological Safety, Kazan, Russia
| | - Daria Morozova
- Federal Center for Toxicological, Radiation and Biological Safety, Kazan, Russia
| | - Sergey Yakovlev
- Federal Center for Toxicological, Radiation and Biological Safety, Kazan, Russia
| | - Olga Larionova
- Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
| | - Valentina Feodorova
- Saratov State University of Genetics, Biotechnology and Engineering named after N.I. Vavilov, Saratov, Russia
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Jonker A, Michel AL. Optimization and Application of Real-Time qPCR Assays in Detection and Identification of Chlamydiales in Products of Domestic Ruminant Abortion. Pathogens 2023; 12:pathogens12020290. [PMID: 36839562 PMCID: PMC9965055 DOI: 10.3390/pathogens12020290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Domestic ruminant abortions due to infectious agents represent an important cause of economic losses in the agricultural industry. This study aimed to optimise and apply qPCR assays for detection of Chlamydiales in domestic ruminant abortion cases. Primers and probes for detection of the order Chlamydiales, Chlamydia abortus, Chlamydia pecorum, Parachlamydia acanthamoeba and Waddlia chondrophila were taken from the literature to create one singleplex and two duplex assays and the assays were optimised. Placentitis and pneumonia are pathological lesions associated with Chlamydiales infection. In a previous study, twenty-five clinical cases had pathological lesions of placentitis or pneumonia. These cases were investigated further by application of the qPCR assays in this study. Chlamydiales were detected in 16 cases. C. abortus, P. acanthamoeba and W. chondrophila were detected in bovine; and C. pecorum and W. chondrophila in ovine and caprine cases. Chlamydiales were detected in three previously inconclusive cases. Identification was improved from genus to species level (C. pecorum). Four cases remained inconclusive. In conclusion, detection of Chlamydiales and differentiation to species level was improved. This study reports the first detection of P. acanthamoeba and W. chondrophila in abortion cases in South Africa, indicating a potentially significant role in abortions in this country.
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Li CX, Gao J, Shi SR, Gao WW, Zhu XQ, Lei YP, Zhang Y, Zheng WB. The Seroprevalence of Chlamydia Infection in Sheep in Shanxi Province, China. Vet Sci 2022; 9:vetsci9120656. [PMID: 36548817 PMCID: PMC9784335 DOI: 10.3390/vetsci9120656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/14/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Chlamydia, an obligate intracellular bacterium, can cause chlamydiosis in humans and animals worldwide and also leads to serious economic losses to the sheep industry. However, the information on Chlamydia infection in sheep was limited in Shanxi Province, northern China. In the present study, a total of 984 serum samples of sheep were collected from 11 regions in Shanxi Province, northern China in the autumn of 2020. The antibodies against Chlamydia and Chlamydia abortus were examined by the indirect hemagglutination assay (IHA) and indirect enzyme-linked immunosorbent assay (ELISA), respectively. The result showed that 351 (35.67%, 95% CI 32.68-38.66) of 984 serum samples were positive for Chlamydia, and the seroprevalence ranged from 6.67% to 70.79% among the different regions. In addition, antibodies to C. abortus infection were detected in 78 (7.93%, 95% CI 6.24-9.61) of 984 serum samples, and the seroprevalence ranged from 6.24% to 14.81% among the different regions. This is the first report on the seroprevalence of Chlamydia and C. abortus in sheep in Shanxi province, northern China. The findings provide baseline information for preventing and controlling Chlamydia infection in sheep in Shanxi Province, China.
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Affiliation(s)
- Chen-Xu Li
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Jin Gao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Sheng-Rong Shi
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Wen-Wei Gao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Xing-Quan Zhu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
- Key Laboratory of Veterinary Public Health of Higher Education of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China
| | - Yu-Ping Lei
- Veterinary Laboratory, Shanxi Provincial Animal Disease Prevention and Control Center, Taiyuan 030008, China
| | - Yu Zhang
- Veterinary Laboratory, Shanxi Provincial Animal Disease Prevention and Control Center, Taiyuan 030008, China
- Correspondence: (Y.Z.); (W.-B.Z.)
| | - Wen-Bin Zheng
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
- Correspondence: (Y.Z.); (W.-B.Z.)
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Chisu V, Zobba R, Masala G, Tran TL, Ngo Viet QT, Tran DB, Nguyen HB, Tran KT, Alberti A. First Molecular Detection of Zoonotic Chlamydia Species in Vietnamese Goats. Pathogens 2022; 11:pathogens11080903. [PMID: 36015020 PMCID: PMC9415483 DOI: 10.3390/pathogens11080903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/02/2022] [Accepted: 08/08/2022] [Indexed: 11/20/2022] Open
Abstract
The genus Chlamydia comprises obligate intracellular bacteria that infect a wide variety of hosts, with infection leading to a range of diseases in humans and animals; they thus constitute a major public health threat. Among the members of the Chlamydiaceae family, Chlamydia suis, C. abortus, C. pecorum, and C. psittaci represent the most important pathogenic species infecting a large range of hosts and are a well-established threat to livestock. Information regarding the circulation of Chlamydia species in ruminants from Vietnam is lacking. In this study, DNA extracted from 60 blood samples collected from goats in Hue province was used for Chlamydia spp. identification by classic PCR and Sanger sequencing. Chlamydia spp. were detected in eleven samples (18.3%) and C. abortus and C. psittaci were molecularly identified by sequencing. Despite the limited sample size in this study, findings point out the relevance of ruminants as hosts of chlamydial species in Central Vietnam and the importance of monitoring chlamydial strains through the activation of surveillance programs in this country. The need for a deeper evaluation of human and animal health risk analysis in terms of chlamydiosis should be also considered.
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Affiliation(s)
- Valentina Chisu
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Via Vienna, 2, 07100 Sassari, Italy
- Correspondence: (V.C.); (A.A.)
| | - Rosanna Zobba
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
| | - Giovanna Masala
- Department of Animal Health, Istituto Zooprofilattico Sperimentale della Sardegna, Via Vienna, 2, 07100 Sassari, Italy
| | - Thanh Loan Tran
- Department of Immunology and Pathophysiology, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Quynh Tram Ngo Viet
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Dinh Binh Tran
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Hoang Bach Nguyen
- Department of Microbiology, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Khanh Toan Tran
- Department of Testing and Quality Assurance, Hue University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam
| | - Alberto Alberti
- Department of Veterinary Medicine, University of Sassari, Via Vienna 2, 07100 Sassari, Italy
- Correspondence: (V.C.); (A.A.)
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Limón-González MM, Hernández-Castro R, Martínez-Hernández F, Xicohtencatl-Cortes J, Ramírez-Alvarez H, Palomares-Resendiz EG, Díaz-Aparicio E. Genetic diversity of Chlamydia pecorum detected in sheep flocks from Mexico. Braz J Microbiol 2022. [DOI: https:/doi.org/10.1007/s42770-022-00682-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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Limón-González MM, Hernández-Castro R, Martínez-Hernández F, Xicohtencatl-Cortes J, Ramírez-Alvarez H, Palomares-Resendiz EG, Díaz-Aparicio E. Genetic diversity of Chlamydia pecorum detected in sheep flocks from Mexico. Braz J Microbiol 2022. [DOI: https://doi.org/10.1007/s42770-022-00682-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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Limón-González MM, Hernández-Castro R, Martínez-Hernández F, Xicohtencatl-Cortes J, Ramírez-Alvarez H, Palomares-Resendiz EG, Díaz-Aparicio E. Genetic diversity of Chlamydia pecorum detected in sheep flocks from Mexico. Braz J Microbiol 2022; 53:605-613. [PMID: 35119684 PMCID: PMC9151965 DOI: 10.1007/s42770-022-00682-9] [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: 11/09/2020] [Accepted: 01/13/2022] [Indexed: 02/06/2023] Open
Abstract
Chlamydia pecorum, an obligate intracellular bacterium, is associated with reproductive and systemic diseases in sheep, goats, pigs, cattle, and koalas. The main conditions include polyarthritis, conjunctivitis, enteritis, pneumonia, encephalomyelitis, orchitis, placentitis, and abortion. Even though there are several studies showing that C. pecorum infections are widely spread in the world, in Mexico there are no reports. During 2016, as part of a sheep restocking program in Mexico, sheep were imported from New Zealand. Briefly after their arrival in the herds in the State of Mexico, these sheep presented abortions during the last third of gestation. A total of 62 sheep vaginal swabs that had presented abortion from different municipalities of the State of Mexico were collected. Bacterial isolation was performed using L929 mouse fibroblasts, and molecular identification was achieved by 23S rRNA (Chlamydiaceae family) and ompA gene (species-specific) real-time polymerase chain reaction (PCR). In addition, the 16S rRNA subunit and ompA gene were amplified and sequenced. Seven of 62 samples were positive for C. pecorum by bacterial isolation, 23S rRNA, and ompA gene real-time PCR. The 16S rRNA subunit and ompA gene amplicons were purified and the nucleotide sequence was determined in both directions. The consensus sequences homology search was performed using BLASTn analysis and showed a 100% of homology with the C. pecorum 16S rRNA subunit and 99% with the C. pecorum ompA gene. The population structure analyses using ompA gene demonstrated 15 genetic populations or clusters of 198 sequences from GenBank and our sequences were in a particular genetic structure corresponding to genotype "O." Herein, we describe the presence of C. pecorum in sheep imported from New Zealand into Mexico. Genetic analysis of the ompA gene showed that the isolates belong to genotype O and are related to strains isolated from sheep, cattle, and koalas.
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Affiliation(s)
- M M Limón-González
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, 04510, Ciudad de México, Mexico.
| | - R Hernández-Castro
- Departamento de Ecología de Agentes Patógenos, Hospital General "Dr. Manuel Gea González", Tlalpan, 14080, Ciudad de México, Mexico
| | - F Martínez-Hernández
- Departamento de Ecología de Agentes Patógenos, Hospital General "Dr. Manuel Gea González", Tlalpan, 14080, Ciudad de México, Mexico
| | - J Xicohtencatl-Cortes
- Laboratorio de Bacteriología Intestinal, Hospital Infantil de México "Dr. Federico Gómez", Cuauhtémoc, 06720, Ciudad de México, Mexico
| | - H Ramírez-Alvarez
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, 54714, Cuautitlán Izcalli, Estado de México, Mexico
| | - E G Palomares-Resendiz
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad (CENID-SAI), Instituto Nacional de Investigaciones ForestalesAgrícolas y Pecuarias, Cuajimalpa, 05110, Ciudad de México, Mexico
| | - E Díaz-Aparicio
- Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad (CENID-SAI), Instituto Nacional de Investigaciones ForestalesAgrícolas y Pecuarias, Cuajimalpa, 05110, Ciudad de México, Mexico
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Haif A, Khelifi-Ouchene NA, Khelifi M, Ouchetati I, Zeroual F, Ouchene N. Abortive diseases and their various associated risk factors in small ruminants in Algeria: a systematic review. Trop Anim Health Prod 2021; 53:520. [PMID: 34669051 PMCID: PMC8526997 DOI: 10.1007/s11250-021-02926-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 09/10/2021] [Indexed: 12/03/2022]
Abstract
Abortive infections are a major health challenge affecting productive and reproductive performance of sheep and goats. However, there is no comprehensive summary on the occurrence and distribution of these infections in Algeria. This systematic review provides a comprehensive summary on the prevalence of different abortive diseases and assesses potential risk factors in small ruminants in Algeria. Five databases were used to search epidemiological data on the prevalence of different abortive diseases (bacterial, parasitic, and viral). Data were collected from 25 papers published between 2003 and 2020. The total mean sample size was 53,080 small ruminants. The majority of the diseases/infections were diagnosed by serological and molecular tests. The overall prevalence of brucellosis was 0.39% in sheep and 5.31% in goats. Chlamydia and Q fever were observed in 32.72% and 20.62% of small ruminants, respectively. The prevalence of peste des petits ruminants was 15.76% and the overall prevalence of bluetongue in sheep and goats was, respectively, 13.41% and 44.50%. Border disease and bovine viral diarrhea were detected in 22.68% and 1.01% of sheep examined, respectively. Toxoplasma gondii infection prevalence among sheep and goats was 21.43% and 32.31% respectively. This study is a comprehensive epidemiological analysis of abortion diseases in small ruminants in Algeria and will therefore be a useful tool for researchers. Larger and more robust prevalence studies are needed to adequately support risk assessment and management of animal and public health threats.
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Affiliation(s)
- Asma Haif
- Department of Veterinary Sciences, University of El Tarf, 36000, El Tarf, Algeria
| | - Nadjet Amina Khelifi-Ouchene
- Institute of Veterinary Sciences, University Saad Dahlab of Blida 1, Street Soumaa, BP270, 09000, Blida, Algeria.
- Laboratory PADESCA, Veterinary Sciences Institute, Road of Guelma, El-khroub, 25100, Constantine, Algeria.
| | - Manal Khelifi
- Bordj Menaiel Hospital, Street Madaoui Ali, BP70, 35000, Boumerdes, Algeria
| | - Imane Ouchetati
- Normal High School of Technological Teaching, University of Skikda, 21000, Skikda, Algeria
| | - Fayçal Zeroual
- Department of Veterinary Sciences, University of El Tarf, 36000, El Tarf, Algeria
| | - Nassim Ouchene
- Institute of Veterinary Sciences, University Saad Dahlab of Blida 1, Street Soumaa, BP270, 09000, Blida, Algeria
- Laboratory PADESCA, Veterinary Sciences Institute, Road of Guelma, El-khroub, 25100, Constantine, Algeria
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Esmaeili H, Bolourchi M, Mokhber-Dezfouli MR, khaltabadi farahani R, Teimourpour A. Detection of Chlamydia abortus and risk factors for infection in small ruminants in Iran. Small Rumin Res 2021. [DOI: 10.1016/j.smallrumres.2021.106339] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Benaissa MH, Mimoune N, Youngs CR, Kaidi R, Faye B. First report of Chlamydophila abortus infection in the dromedary camel (Camelus dromedarius) population in eastern Algeria. Comp Immunol Microbiol Infect Dis 2020; 73:101557. [PMID: 33065404 DOI: 10.1016/j.cimid.2020.101557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 02/05/2023]
Abstract
Chlamydiosis is caused by an obligate intracellular gram-negative bacterium of the genus Chlamydophila which is a zoonotic pathogen. The objectives of the study were to identify the seroprevalence of antibodies against Chlamydophila abortus in dromedary camel herds from four districts in eastern Algeria, as well as to estimate the association between seroprevalence and certain factors present at the animal and herd levels. Blood samples were collected from a random sample of animals within each of 82 camel herds. Serum samples were subjected to a C. abortus ELISA test, and association between the presence of antibodies and potential risk factors was estimated. Animal and herd seroprevalence were 2.5 % and 15.8 %, respectively, indicating substantial exposure of camels to C. abortus in the four districts studied. Age, breed, and sex did not influence seroprevalence in tested animals. Based on the univariate analysis, contact with sheep and goats, contact with other camel herds, and histories of abortion were major risk factors for infection. By using multivariate analysis, contact of camels with sheep and goats and with others camel herds, through shared grazing or watering points, were important factors for transmission of chlamydiosis with an odds ratio of 3.3 and 9.4, respectively. At the herd level the introduction of purchased animals was the major risk factor. This baseline information will be highly useful for launching C. abortus control programs in the region and potentially elsewhere.
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Affiliation(s)
- Mohammed Hocine Benaissa
- Scientific and Technical Research Centre for Arid Areas (CRSTRA), Biophysical Station, PB 30240, Nezla, Touggourt, Algeria.
| | - Nora Mimoune
- National High School of Veterinary Medicine, Bab-Ezzouar, Algiers, Algeria; Institute of Veterinary Sciences, LBRA, University of Blida 1, PB 270, Soumaa, Blida, Algeria
| | - Curtis R Youngs
- Animal Science Department, Iowa State University, Ames, IA 50011 USA
| | - Rachid Kaidi
- Institute of Veterinary Sciences, LBRA, University of Blida 1, PB 270, Soumaa, Blida, Algeria
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Barkallah M, Jribi H, Ben Slima A, Gharbi Y, Mallek Z, Gautier M, Fendri I, Gdoura R. Molecular prevalence of Chlamydia and Chlamydia-like bacteria in Tunisian domestic ruminant farms and their influencing risk factors. Transbound Emerg Dis 2017; 65:e329-e338. [PMID: 29120114 DOI: 10.1111/tbed.12757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Indexed: 02/04/2023]
Abstract
Chlamydia and Chlamydia-like bacteria are well known to infect several organisms and may cause a wide range of diseases, particularly in ruminants. To gain insight into the prevalence and diversity of these intracellular bacteria, we applied a pan-Chlamydiales real-time PCR to 1,134 veterinary samples taken from 130 Tunisian ruminant herds. The true adjusted animal population-level prevalence was 12.9% in cattle, against 8.7% in sheep. In addition, the true adjusted herd-level prevalence of Chlamydiae was 80% in cattle and 25.5% in sheep. Chlamydiales from three family-level lineages were detected indicating a high biodiversity of Chlamydiales in ruminant herds. Our results showed that Parachlamydia acanthamoebae could be responsible for bovine and ovine chlamydiosis in central-eastern Tunisia. Multivariable logistic regression analysis at the animal population level indicated that strata and digestive disorders variables were the important risk factors of bovine and ovine chlamydiosis. However, origin and age variables were found to be associated with bovine and ovine chlamydiosis, respectively. At the herd level, risk factors for Chlamydia positivity were as follows: abortion and herd size for cattle against breeding system, cleaning frequency, quarantine, use of disinfectant and floor type for sheep. Paying attention to these risk factors will help improvement of control programs against this harmful zoonotic disease.
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Affiliation(s)
- M Barkallah
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
| | - H Jribi
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
| | - A Ben Slima
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
| | - Y Gharbi
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
| | - Z Mallek
- Veterinary Research Center of Sfax, Sfax, Tunisia
| | - M Gautier
- Equipe Microbiologie de l'œuf et des Ovoproduits (MICOV), Agrocampus Ouest, INRA, (UMR1253) Science et Technologie du Lait et de l'Œuf, Rennes, France
| | - I Fendri
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
| | - R Gdoura
- Faculty of Sciences of Sfax, Toxicology-Microbiology and Environmental Health Laboratory (LR17ES06), University of Sfax, Sfax, Tunisia
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Molecular evidence of tick-borne hemoprotozoan-parasites (Theileria ovis and Babesia ovis) and bacteria in ticks and blood from small ruminants in Northern Algeria. Comp Immunol Microbiol Infect Dis 2016; 50:34-39. [PMID: 28131376 DOI: 10.1016/j.cimid.2016.11.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 10/26/2016] [Accepted: 11/13/2016] [Indexed: 11/22/2022]
Abstract
Using qPCR, standard PCR and/or sequencing, we investigated the presence of tick-associated microorganisms in ticks and blood from sheep and goats from Souk Ahras, Algeria. Borrelia theileri, was detected in (7/120, 5.8%) blood from sheep and (13/120, 10.8%) goats. Anaplasma ovis was screened in (38/73, 52%) Rhipicephalus bursa and (5/22, 22.7%) R. turanicus and in (74/120, 61.7%), (65/120, 54.2%) blood of sheep and goats respectively. Coxiella burnetii tested positive in R. bursa (4/73, 5.5%) and (7/120, 5.8%) blood of sheep and (2/120, 1.7%) goats. Theileria ovis was detected in (50/147, 34%) R. bursa and (3/22, 13.6%) R. turanicus and in (64/120, 53.3%) blood of sheep and (25/120, 20.8%) goats. Babesia ovis was screened positive in (23/147, 15.6%) R. bursa and (7/48, 14.6%) R. turanicus. Our findings expand knowledge about the repertoire of tick-borne microorganisms present in ectoparasites and/or the blood of small ruminants in Algeria.
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Hireche S, Ababneh MMK, Bouaziz O, Boussena S. Seroprevalence and molecular characterization of Chlamydia abortus in frozen fetal and placental tissues of aborting ewes in northeastern Algeria. Trop Anim Health Prod 2015; 48:255-62. [PMID: 26526957 DOI: 10.1007/s11250-015-0944-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/23/2015] [Indexed: 11/29/2022]
Abstract
Enzootic abortion of ewes is one of the most serious health problems in sheep flocks worldwide. It has a significant economic impact because abortion, decrease in milk production and weak lambs. Besides, the bacteria is zoonotic. A cross-sectional study was conducted to determine the seroprevalence and risk factors associated with Chlamydia abortus infection in 552 ewes in Constantine using a C. abortus-specific indirect ELISA kit. Chlamydial DNA was investigated in ten ovine fetuses and eight placentas using PCR- restriction fragment length polymorphism (RFLP) and DNA sequencing. The study concluded that 7.2 % of ewes were seropositive and 33.3 % of sheep flocks had at least one seropositive ewe. Adjacent farmworker visits (OR = 7.667, 95 % CI (OR) = 2.307; 27.203) was defined as a risk factor. Deliveries of weak lambs (OR = 2.920, 95 % CI (OR) = 1.022; 8.342) and septicemia in lambs (OR = 9.971, 95 % CI (OR) = 2.383; 41.713) were significantly associated with chlamydial infection. PCR-RFLP analysis revealed positive signals to C. abortus in six fetuses and four placentas. Sequencing of the omp2 gene revealed that the Algerian strain is 96 % similar with C. abortus FAS strain. C. abortus plays a major role in abortion in northeastern Algeria. Appropriate control measures must be implemented to reduce economic losses and to avoid human contamination.
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Affiliation(s)
- Sana Hireche
- Management of Animal Health and Productions Laboratory, Institute of Veterinary Sciences, University of Frères Mentouri Constantine 1, Constantine, Algeria.
| | | | - Omar Bouaziz
- Management of Animal Health and Productions Laboratory, Institute of Veterinary Sciences, University of Frères Mentouri Constantine 1, Constantine, Algeria
| | - Sabrina Boussena
- Management of Animal Health and Productions Laboratory, Institute of Veterinary Sciences, University of Frères Mentouri Constantine 1, Constantine, Algeria
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Sun WW, Meng QF, Cong W, Shan XF, Wang CF, Qian AD. Herd-level prevalence and associated risk factors for Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhoea virus in commercial dairy and beef cattle in eastern, northern and northeastern China. Parasitol Res 2015; 114:4211-8. [PMID: 26231838 DOI: 10.1007/s00436-015-4655-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 07/23/2015] [Indexed: 01/07/2023]
Abstract
Although the seroprevalence of Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhea virus infection in cattle have been reported in some areas in China, most of them were conducted with small number of cattle samples and very limited districts and neglected the assessment of herd management factors associated with herd-level prevalence of these pathogen infections. Thus, from September 2013 to December 2014, a large-scale seroprevalence study was conducted to determine the animal-level and herd-level seroprevalence and identify herd-level risk factors associated with these pathogen infections in 4487 cattle from 134 herds in five provinces (Heilongjiang, Jilin, Liaoning, Shandong, Hebei) and Inner Mongolia Autonomous Region of China. At animal level, the true prevalence of antibodies against T. gondii, N. caninum, C. abortus and bovine viral diarrhoea virus (BVDV) was 10.48, 17.14, 11.92 and 50.10%, respectively. At herd level, the true prevalence of antibodies against T. gondii, N. caninum, C. abortus and BVDV was 27.16, 29.10, 37.31 and 40.30%, respectively. Multivariate analysis of these characteristics showed that source of water and presence of felids were significantly associated with T. gondii infection in the studied cattle herds. Source of water was significantly associated with N. caninum infection in the studied cattle herds. While herd size and management system were significantly associated with BVDV infection in the studied cattle herds, this is the first report of herd-level prevalence and associated risk factors of T. gondii, N. caninum, C. abortus and BVDV infection in cattle in China.
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Affiliation(s)
- Wu-Wen Sun
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin Province, 130118, People's Republic of China
| | - Qing-Feng Meng
- Jilin Entry-Exit Inspection and Quarantine Bureau, Changchun, Jilin Province, 130118, People's Republic of China
| | - Wei Cong
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin Province, 130118, People's Republic of China.
| | - Xiao-Feng Shan
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin Province, 130118, People's Republic of China
| | - Chun-Feng Wang
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin Province, 130118, People's Republic of China
| | - Ai-Dong Qian
- College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin Province, 130118, People's Republic of China.
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