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Wu XJ, Gao J, Zhang Q, Li CX, Zheng WB, Liu Q, Zhu XQ, Lei YP, Gao WW. Seroprevalence and Risk Factors of Chlamydia Infection in Cattle in Shanxi Province, North China. Animals (Basel) 2023; 13:ani13020252. [PMID: 36670792 PMCID: PMC9854887 DOI: 10.3390/ani13020252] [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: 12/04/2022] [Revised: 12/30/2022] [Accepted: 01/06/2023] [Indexed: 01/13/2023] Open
Abstract
The information on Chlamydia infection in cattle is limited in Shanxi Province, north China. This study aimed to investigate the seroprevalence and risk factors of Chlamydia and Chlamydia abortus infection in cattle in Shanxi Province. In November 2020, a large-scale investigation of Chlamydia seroprevalence was conducted on 981 cattle serum samples collected from 40 cattle farms in 11 cities of Shanxi Province. The seroprevalence of Chlamydia and C. abortus was examined by indirect hemagglutination assay (IHA) and enzyme-linked immunosorbent assay (ELISA), respectively. The seroprevalence of Chlamydia and C. abortus was 52.29% (513/981) and 2.96% (29/981), respectively, in cattle in Shanxi Province. Location was identified as a risk factor for Chlamydia and C. abortus infection (p < 0.05). Under different management patterns, the seroprevalence of Chlamydia and C. abortus in large-scale animal farming companies was higher than that in household animal farms and animal farming cooperatives, and only the seroprevalence of Chlamydia was significantly different in different management patterns (p < 0.01). The results showed that there was higher seroprevalence of Chlamydia in cattle in Shanxi Province, while C. abortus was not the dominant species. This study provided baseline information on Chlamydia infection in cattle in Shanxi Province, which constitutes valuable data for monitoring livestock health and preventing potential zoonoses.
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Affiliation(s)
- Xiao-Jing Wu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Jin Gao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Qian Zhang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Chen-Xu Li
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Wen-Bin Zheng
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
| | - Qing Liu
- 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
- Correspondence: (Y.-P.L.); (W.-W.G.)
| | - Wen-Wei Gao
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030801, China
- Correspondence: (Y.-P.L.); (W.-W.G.)
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2
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Liang L, Wen Y, Li Z, Liu P, Liu X, Tan S, Liu D, Zhou J, Tong D. Seroprevalence of Chlamydia abortus infection in yak (Bos grunniens) in Tibet, China. Ir Vet J 2021; 74:19. [PMID: 34193296 PMCID: PMC8246664 DOI: 10.1186/s13620-021-00199-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 06/22/2021] [Indexed: 11/10/2022] Open
Abstract
Chlamydia spp. are prevalent zoonotic pathogens that infect a wide variety of host species. Chlamydia abortus (C. abortus) infection in yaks has been reported in Gansu and Qinghai province, China. However, no data about C. abortus infection are available in yaks in Tibet, China. A total of 938 serum samples was collected from yaks in Tibet, China and specific antibodies against C. abortus were detected by the enzyme-linked immunosorbent assay (ELISA). The results showed that the overall seroprevalence of C. abortus in yaks was 104/938 (11.1 %, 95 % confidence interval [CI] 9.1–13.1). The prevalence in female and male yaks was 59/556 (10.6 %, 95 % CI 8.0-13.2) and 45/382 (11.8 %, 95 % CI 8.5–15.0), respectively with no significant difference (p > 0.05). The seroprevalence of antibodies to C. abortus in yaks ranged from 8.0 to 18.2 % among the six different areas, and the difference was also without statistical significance (p > 0.05). The prevalence among different age groups ranged from 7.0 to 15.9 %, with a higher prevalence among 1 to 2 years age category. The results demonstrate the presence of C. abortus infection in yaks in Tibet and may pose a risk for the general yak populations in addition to its potential impact on public health and the local Tibetan economy. To our knowledge, this is the first seroprevalence survey of C. abortus in yaks in Tibet, China.
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Affiliation(s)
- Lin Liang
- College of Veterinary Medicine, Northwest A&F University, 712100, Yangling, China
| | - Yuan Wen
- College of Veterinary Medicine, Northwest A&F University, 712100, Yangling, China.,State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Zhaocai Li
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Ping Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Xing Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Shuming Tan
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Donghui Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China
| | - Jizhang Zhou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, 730046, Lanzhou, China.
| | - Dewen Tong
- College of Veterinary Medicine, Northwest A&F University, 712100, Yangling, China.
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Sun LX, Liang QL, Hu XH, Li Z, Yang JF, Zou FC, Zhu XQ. First Report of Chlamydia Seroprevalence and Risk Factors in Domestic Black-Boned Sheep and Goats in China. Front Vet Sci 2020; 7:363. [PMID: 32766288 PMCID: PMC7380085 DOI: 10.3389/fvets.2020.00363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 05/26/2020] [Indexed: 12/03/2022] Open
Abstract
The Gram-negative bacteria of the genus Chlamydia cause a wide range of diseases in humans and animals. The seroprevalence of Chlamydia in domestic black-boned sheep and goats in China is unknown. In this survey, a total of 481 serum samples were collected randomly from domestic black-boned sheep and goats from three counties in Yunnan province, southwest China, from July to August 2017. The sera were examined by an indirect hemagglutination assay (IHA). Antibodies to Chlamydia were detected in 100/481 [20.79%, 95% confidence interval (CI), 17.16–24.42] serum samples (IHA titer ≥1:64). The Chlamydia seroprevalence ranged from 12.21% (95% CI, 7.81–16.61) to 30.89% (95% CI, 22.72–39.06) across different regions in Yunnan province, and the differences were statistically significant (P < 0.01). The seroprevalence in male domestic black-boned sheep and goats (28.64%; 95% CI, 22.36–34.92) was significantly higher than that in the females (15.25%; 95% CI, 11.05–19.45) (P < 0.01). However, there was no statistically significant difference in Chlamydia seroprevalence in domestic black-boned sheep and goats between ages and species (P > 0.05). To our knowledge, this is the first report of Chlamydia seroprevalence in domestic black-boned sheep and goats in Yunnan Province, southwest China. These data provide baseline information for future implementation of measures to control Chlamydia infection in these animals.
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Affiliation(s)
- Li-Xiu Sun
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Qin-Li Liang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Xiao-Hui Hu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhao Li
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Jian-Fa Yang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Feng-Cai Zou
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Xing-Quan Zhu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
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Chang H, Han J, Yang Y, Duan G, Zou F, Xiang X, Dai F. First Report of Chlamydia Psittaci Seroprevalence in Black-headed Gulls ( Larus Ridibundus) at Dianchi Lake, China. Open Life Sci 2018; 13:250-252. [PMID: 33817090 PMCID: PMC7874713 DOI: 10.1515/biol-2018-0030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/09/2018] [Indexed: 11/15/2022] Open
Abstract
Chlamydiosis is an important zoonosis which can transmit from birds to humans, and investigation first reported the seroprevalence of Chlamydia psittaci in black-headed gulls (Larus ridibundus) at the Dianchi Lake, China. A total of 1029 serum samples collected from black-headed gulls between 2012-2015 were analyzed. The gulls were randomly caught and blood collected at Dianchi Lake, China. All the samples were analyzed for the presence of antibodies to C. psittaci by indirect hemagglutination assay (IHA). In this survey, the total infection rate was 11.86% (122/1029). The results of the present survey documented the existence of relatively high C. psittaci seroprevalence in black-headed gulls, which have a potential risk to the wild bird health and human health. Comprehensive practical control approaches and measures should be executed.
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Affiliation(s)
- Hua Chang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Jiangqiang Han
- Yuxi College of Agricultural Vocational Technology, Yuxi, Yunnan Province 653106, China
| | - Yan Yang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Gang Duan
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Fengcai Zou
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Xun Xiang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Feiyan Dai
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
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Nie LB, Liang QL, Zou Y, Gao YH, Zhao Q, Hu GX, Zhu XQ. First Report of Chlamydia Seroprevalence in Farmed Wild Boars in China. Vector Borne Zoonotic Dis 2018; 18:504-508. [PMID: 29688824 DOI: 10.1089/vbz.2018.2272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Chlamydia is Gram-negative obligate bacterium, which can cause human diseases worldwide and has huge economic impact on animals. It is yet to know whether farmed wild boars are infected with Chlamydia in China. To assess risk factors of Chlamydia infection in farmed wild boars in China, from April 2015 to February 2016, a total of 837 serum samples of farmed wild boars were collected in Jilin province, northeastern China, and antibodies against Chlamydia were examined by the indirect hemagglutination assay. The investigation showed that antibodies to Chlamydia were detected in 332 (39.67%, 95% CI 33.36-42.98) of 837 serum samples of farmed wild boars, seroprevalence ranged from 33.71% to 44.42% among different regions and the differences were statistically significant by SPSS analysis (p = 0.0248). These results indicated that Chlamydia is highly prevalent in farmed wild boars in Jilin province, northeastern China, and may pose a potential risk for human health. To our knowledge, this is the first report of Chlamydia seroprevalence in farmed wild boars in China, which provided baseline data for preventing and controlling Chlamydia infection in wild boars in China.
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Affiliation(s)
- Lan-Bi Nie
- 1 Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University , Changchun Jilin Province, The People's Republic of China .,2 State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, The People's Republic of China
| | - Qin-Li Liang
- 2 State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, The People's Republic of China
| | - Yang Zou
- 2 State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, The People's Republic of China
| | - Yun-Hang Gao
- 1 Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University , Changchun Jilin Province, The People's Republic of China
| | - Quan Zhao
- 1 Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University , Changchun Jilin Province, The People's Republic of China
| | - Gui-Xue Hu
- 1 Department of Preventive Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University , Changchun Jilin Province, The People's Republic of China
| | - Xing-Quan Zhu
- 2 State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute , Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, The People's Republic of China .,3 Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University College of Veterinary Medicine , Yangzhou, Jiangsu Province, The People's Republic of China
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6
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Ndengu M, Matope G, Tivapasi M, Scacchia M, Bonfini B, Pfukenyi DM, de Garine-Wichatitsky M. Sero-prevalence of chlamydiosis in cattle and selected wildlife species at a wildlife/livestock interface area of Zimbabwe. Trop Anim Health Prod 2018; 50:1107-1117. [PMID: 29464541 DOI: 10.1007/s11250-018-1536-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/01/2018] [Indexed: 10/18/2022]
Abstract
A study was conducted to investigate the seroprevalence and associated risk factors of Chlamydia abortus infection in cattle and some selected wildlife species at selected interface areas at the periphery of the Great Limpopo Transfrontier Conservation Area in Zimbabwe. Three study sites were selected based on the type of livestock-wildlife interface, porous livestock-wildlife interface (unrestricted), non-porous livestock-wildlife interface (restricted by fencing), and livestock-wildlife non-interface (totally absent or control). Sera were collected from cattle aged ≥ 2 years representing both female and intact male. Sera were also collected from selected wild ungulates from Mabalauta (porous interface) and Chipinda Pools (non-interface) areas of the Gonarezhou National Park. Sera were tested for antibodies to Chlamydia abortus using a CFT. A X 2 test was used to assess differences between categories and p < 0.05 was considered as significant. In cattle, the overall seroprevalence was 32.7% (327/1011; 95% CI 29.5-35.3). A significantly lower seroprevalence was recorded for the porous interface (24.2%) compared to the non-porous (42.5%) (p < 0.0001) and the non-interface (36.2%) (p = 0.001). Overall, the wet season recorded a significantly (p = 0.015) higher seroprevalence than the dry season. In wildlife, antibodies were detected in buffaloes (47.7%) and impalas (43.8%) but not in kudus. Buffaloes from Chipinda Pools (53.4%) had a significantly (p = 0.036) higher seroprevalence than those from Mabalauta (26.1%). The results established the presence of chlamydiosis in cattle and selected wildlife and that independent infections may be maintained in buffalo populations. Further studies are required to clarify chlamydiae circulating between cattle and wildlife.
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Affiliation(s)
- Masimba Ndengu
- Department of Clinical Veterinary Studies, Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe. .,Research Platform Production and Conservation in Partnership, P.O. Box 1378, Harare, Zimbabwe.
| | - Gift Matope
- Research Platform Production and Conservation in Partnership, P.O. Box 1378, Harare, Zimbabwe.,Department of Paraclinical Veterinary Studies, Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe
| | - Musavengana Tivapasi
- Department of Clinical Veterinary Studies, Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe.,Research Platform Production and Conservation in Partnership, P.O. Box 1378, Harare, Zimbabwe
| | - Massimo Scacchia
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Del Molise "G.Caporale", Via Campo Boario, 64100, Teramo, Italy
| | - Barbara Bonfini
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e Del Molise "G.Caporale", Via Campo Boario, 64100, Teramo, Italy
| | - Davis Mubika Pfukenyi
- Department of Clinical Veterinary Studies, Faculty of Veterinary Science, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe.,Research Platform Production and Conservation in Partnership, P.O. Box 1378, Harare, Zimbabwe
| | - Michel de Garine-Wichatitsky
- Research Platform Production and Conservation in Partnership, P.O. Box 1378, Harare, Zimbabwe.,UR AGIRs, Cirad, Campus International de Baillarguet, 34398, Montpellier, France
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7
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Hu SF, Li F, Zheng WB, Liu GH. Seroprevalence and Risk Factors of Chlamydia abortus Infection in Goats in Hunan Province, Subtropical China. Vector Borne Zoonotic Dis 2018; 18:500-503. [PMID: 29360009 DOI: 10.1089/vbz.2017.2183] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Chlamydia abortus is an obligate intracellular Gram-negative bacteria, which can infect animals and human, including goats. However, little information on C. abortus infection is available in goats in Hunan province, subtropical China. To investigate the seroprevalence and risk factors of C. abortus infection in goats in Hunan province, China, a total of 911 goat blood samples were collected randomly from 14 herds having number of goats ranging from 1000 to 3000 from March 2014 to December 2015. Seropositive animals were found in 11 out of 14 (78.57%) goat herds with seroprevalence ranging from 0.00% to 29.94% in individual herds. Overall, the seroprevalence of C. abortus infection was different among regions (southern Hunan: 1.78%; northeast Hunan: 5.47%; and west Hunan: 15.29%), gender (male: 4.58% and female: 9.10%), seasons (spring: 5.97%; summer: 2.61%; autumn: 16.88%; and winter: 10.94%), and ages (year ≤1: 2.39%; 1 < year ≤2: 9.58%; 2 < year ≤3: 9.16%; and year >3: 17.57%). Risk factors for C. abortus infection were associated with region, season, and age in this study. To our knowledge, this is the first document to demonstrate the existence of C. abortus infection in goats, and the seroprevalence was 8.45% out of 911 goats in Hunan province.
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Affiliation(s)
- Shi-Feng Hu
- 1 Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University , Changsha, Hunan Province, The People's Republic of China .,2 Hunan Co-Innovation Center of Animal Production Safety , Changsha, Hunan Province, The People's Republic of China
| | - Fen Li
- 1 Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University , Changsha, Hunan Province, The People's Republic of China .,2 Hunan Co-Innovation Center of Animal Production Safety , Changsha, Hunan Province, The People's Republic of China
| | - Wen-Bin Zheng
- 1 Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University , Changsha, Hunan Province, The People's Republic of China
| | - Guo-Hua Liu
- 1 Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University , Changsha, Hunan Province, The People's Republic of China .,2 Hunan Co-Innovation Center of Animal Production Safety , Changsha, Hunan Province, The People's Republic of China
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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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9
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Seroprevalence and Risk Factors of Chlamydia Infection in Domestic Rabbits (Oryctolagus cuniculus) in China. BIOMED RESEARCH INTERNATIONAL 2015; 2015:460473. [PMID: 25945336 PMCID: PMC4402174 DOI: 10.1155/2015/460473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 03/14/2015] [Accepted: 03/23/2015] [Indexed: 12/02/2022]
Abstract
Chlamydia spp. are obligate intracellular bacteria distributed all over the world, known to cause various forms of diseases in animals and humans. In the present study, a serological survey was conducted to detect the seroprevalence and risk factors associated with rabbit chlamydiosis in northeast China, including Liaoning province, Jilin province, Heilongjiang province, and Inner Mongolia Autonomous Region. Antibodies to Chlamydia were determined by indirect hemagglutination assay (IHA). The overall seroprevalence was estimated at 17.88% in total of 800 blood samples. The Chlamydia seroprevalence varied in domestic rabbits from different factors, and genders of domestic rabbits were considered as major risk factors associated with Chlamydia infection. Our study revealed a widespread and high prevalence of Chlamydia infection in domestic rabbits in northeast China, with higher exposure risk in female domestic rabbits. These findings suggested the potential importance of domestic rabbits in the transmission of zoonotic Chlamydia infection, and thus Chlamydia should be taken into consideration in diagnosing rabbit diseases. To our knowledge, there is no report of Chlamydia infection in domestic rabbits in China and the results extend the host range for Chlamydia, which has important implications for public health and the local economy.
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10
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Prevalence of antibodies to Chlamydiaceae in pet dogs in Shenzhen, Guangdong Province, China. ACTA VET BRNO 2015. [DOI: 10.2754/avb201585010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The prevalence of chlamydiosis in pet dogs was surveyed in Shenzhen, Guangdong Province, China. A total of 442 serum samples were collected from three districts of Shenzhen, namely the Futian, Nanshan, and Luohu Districts, and assayed for Chlamydiaceae antibodies by indirect haemagglutination assay. The results showed that the mean positive rate was 6.11%, and the positive rate for the Futian District was the highest (9.52%), followed by the Nanshan District (7.08%), and the Luohu District (4.02%). The positive rate for male dogs was 6.08%, and for female dogs 6.16%. Out of all the 38 breeds of dogs examined, 14 breeds were positive. The positive rate for the Cocker Spaniel dog was the highest (14.2%), followed by the Pekinese dog (10.71%), and the Border Collie dog (10.34%). This is the first time that the seroprevalence of Chlamydiaceae infection in pet dogs in Shenzhen, Guangdong province, China was reported, and the results indicated that pet dogs may be an important source for human infection by Chlamydiaceae in Shenzhen and other areas of China.
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Qin SY, Huang SY, Yin MY, Tan QD, Liu GX, Zhou DH, Zhu XQ, Zhou JZ, Qian AD. Seroprevalence and risk factors of Chlamydia abortus infection in free-ranging white yaks in China. BMC Vet Res 2015; 11:8. [PMID: 25601354 PMCID: PMC4308933 DOI: 10.1186/s12917-015-0323-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 01/12/2015] [Indexed: 11/10/2022] Open
Abstract
Background Chlamydia is gram-negative obligate bacteria which causes a wide variety of diseases in humans and animals. To date, there are a few reports about the seroprevalence of Chlamydia and the risk factors associated with Chlamydia infection in yaks in the world. In this study, 974 blood samples were collected from white yaks (Bos grunniens) in Tianzhu Tibetan Autonomous County, Gansu province, northwest China from June 2013 to April 2014. Results Antibodies against Chlamydia abortus were examined by the indirect hemagglutination (IHA) test, and 158 of 974 (16.22%) white yaks were seropositive for C. abortus antibodies at the cut-off of 1:16. The risk factors associated with seroprevalence were evaluated by a multivariate logistic regression analysis. Region, gender and age of white yak were left out of the final model, due to its insignificance in the logistic regression analysis (P > 0.05). However, season was considered as a major risk factor associated with C. abortus infection in white yaks. Conclusions To our knowledge, this is the first survey of C. abortus seroprevalence in white yaks in China, which extends the host range for C. abortus and has important implications for public health and the local Tibetan economy.
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Affiliation(s)
- Si-Yuan Qin
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, 130118, PR China. .,State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Si-Yang Huang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Ming-Yang Yin
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China. .,College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan Province, 410128, PR China.
| | - Qi-Dong Tan
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China. .,College of Animal Science and Technology, Anhui Agricultural University, Hefei, Anhui Province, 230000, PR China.
| | - Guang-Xue Liu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Dong-Hui Zhou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Xing-Quan Zhu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, 130118, PR China. .,State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Ji-Zhang Zhou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, PR China.
| | - Ai-Dong Qian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, 130118, PR China.
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Abstract
SUMMARYParrots are one of the most popular pet birds in China, and can harbour Chlamydia which has significance for human and animal health. We investigated, by indirect haemagglutination assay, the seroprevalence of Chlamydia infection in four species of parrots, namely budgerigars (Melopsittacus undulatus), lovebirds (Agapornis sp.), cockatiels (Nymphicus hollandicus) and Alexandrine parakeets (Psittacula eupatria) that were collected from Weifang and Beijing cities, North China and explored the association between potential risk factors and chlamydial seropositivity. We further determined the genotype of Chlamydia in 21 fresh faecal samples based on the ompA sequence by reconstruction of phylogenetic relationships. Of the 311 parrots examined, 35·37% (95% confidence interval 30·06–40·68) were seropositive, and species, gender, age, season and geographical location were identified as risk factors. Two PCR-positive samples represented Chlamydia psittaci genotype A. The occurrence of C. psittaci genotype A in the droppings of two pet parrots in China suggests potential environmental contamination with Chlamydiaceae and may raise a public health concern.
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Seroprevalence and risk factors of Chlamydia infection in dogs in Southwestern China. Acta Trop 2014; 130:67-70. [PMID: 24141059 DOI: 10.1016/j.actatropica.2013.09.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/20/2013] [Accepted: 09/30/2013] [Indexed: 11/20/2022]
Abstract
Chlamydia spp. are obligate intracellular bacteria distributed globally, known to cause various forms of diseases in animals and humans. To date, there is limited information about the seroprevalence of Chlamydia and the risk factors associated with Chlamydia infection in dogs in the world. In the present study, a serological survey was undertaken to examine the seroprevalence and risk factors associated with dog chlamydiosis in Yunnan Province, southwestern China. A total of 591 dogs were sampled, antibodies to Chlamydia were determined by indirect hemagglutination assay (IHA). The overall seroprevalence was estimated at 17.6%. The risk factors associated with seroprevalence were determined by a multivariate logistic regression analysis. Gender and age of dogs were not significant in the logistic regression analysis (P>0.05) and left out of the final model. Type and geographical origin of dogs were considered as main risk factors associated with Chlamydia infection, stray dogs (31.37%) were more than 16 times (OR=16.167, 95% CI=6.283-41.599, P<0.01) at risk of acquiring the infection compared to the police dogs (7.62%), while pet dogs (14.41%) had a 3 times (OR=2.968, 95% CI=1.349-6.529, P=0.007) higher risk. Positive dogs were found in 5 districts of Yunnan Province with prevalence ranging from 2.56% to 31.67% except Diqing (0/56). Dogs in Kunming (20.21%) had a 9 times higher risk of being seropositive compared to dogs in Lijiang (2.56%) (OR=9.057, 95% CI=1.211-67.714, P=0.032), although no regional differences were found in other 4 administrative divisions compared to Lijiang (P>0.05). Our study revealed a widespread and high prevalence of Chlamydia infection in dogs in Yunnan Province, southwestern China, with higher exposure risk in stray dogs and distinct geographical distribution. These findings suggest the potential importance of dogs in the transmission of zoonotic Chlamydia infection, and thus Chlamydia should be taken into consideration in diagnosing dog diseases.
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Seroprevalence of Chlamydia infection in pigs in Jiangxi province, south-eastern China. J Med Microbiol 2013; 62:1864-1867. [DOI: 10.1099/jmm.0.066555-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Chlamydia are Gram-negative obligate bacteria that cause a wide range of diseases in humans and animals. To assess the risk of zoonosis posed by pigs, a total of 920 serum samples were collected from pigs in 11 administrative cities in Jiangxi province, south-eastern China, and the seroprevalence of Chlamydia antibodies was investigated by an indirect haemagglutination assay. The pathogen-specific antibodies were detected in 539 (58.59 %) pigs with seroprevalence ranging from 33.33 % (Jingdezhen) to 90.91 % (Pingxiang) among different cities (P<0.05). The highest prevalence was found in pregnant sows (80.89 %, 127/157), followed by breeding boars (79.37 %, 50/63), suckling sows (77.01 %, 67/87), fattening pigs (69.32 %, 61/88) and non-pregnant sows (62.5 %, 180/288). Piglets had the lowest prevalence of 22.78 % (54/237). The seroprevalence of Chlamydia infection among different categories of pigs was also significantly different (P<0.05). These results indicate that Chlamydia is highly prevalent in pigs in Jiangxi province and our results indicate that the presence of Chlamydia exposure in pigs may pose a potential threat to human health.
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Wu SM, Huang SY, Xu MJ, Zhou DH, Song HQ, Zhu XQ. Chlamydia felis exposure in companion dogs and cats in Lanzhou, China: a public health concern. BMC Vet Res 2013; 9:104. [PMID: 23694730 PMCID: PMC3666960 DOI: 10.1186/1746-6148-9-104] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Accepted: 05/17/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chlamydiaceae is a family of obligate intracellular pathogens with a worldwide distribution in many animal species, including humans. No information exists on the prevalence of Chlamydia felis infections in cats and dogs in Lanzhou, the geographical center of China. The aim of this study was to carry out a census of cats and dogs in Lanzhou and document the seroprevalence of C. felis exposure in these companion animals. RESULTS In this study, blood samples were collected from 485 animals (221 cats and 264 pet dogs) in Lanzhou between November 2010 and July 2011 to identify antibodies against C. felis. Thirteen of 221 (5.9%) cats and 32 of 264 (12.1%) pet dogs were positive for C. felis infection using indirect hemagglutination at a cutoff of 1:16. The seroprevalence in household and stray cats was 3.9% and 14.3%, respectively, and the difference was statistically significant (P < 0.05). Among different age groups, the seroprevalence in cats varied from 1.9 to 7.9%, and that in dogs ranged from 9.6 to 20.4%; however, the differences were not statistically significant (P > 0.05). CONCLUSIONS This is the first report of the seroprevalence of C. felis exposure in cats and dogs in Lanzhou, northwestern China. Our results indicate that the presence of C. felis exposure in cats and dogs may pose a potential threat to human health.
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Affiliation(s)
- Song-Ming Wu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Si-Yang Huang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Min-Jun Xu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Dong-Hui Zhou
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Hui-Qun Song
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Xing-Quan Zhu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China
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