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Jiang Y, Xin S, Ma Y, Zhang H, Yang X, Yang Y. Low Prevalence of Toxoplasma gondii in Sheep and Isolation of a Viable Strain from Edible Mutton from Central China. Pathogens 2023; 12:827. [PMID: 37375517 DOI: 10.3390/pathogens12060827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/08/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Sheep are highly susceptible to Toxoplasma gondii, and miscarriage is the main clinical feature. This study investigated 227 sheep samples (210 myocardial tissues from slaughterhouses, 6 ewe serum samples, 3 aborted fetuses, and 8 dead lambs from veterinary clinics) from central China for T. gondii infection. Antibodies against T. gondii were detected using the modified agglutination test (MAT). PCR was performed to detect T. gondii DNA in the tissue samples. The results showed that four samples were seropositive (MAT titer ≥ 1:100), with a seroprevalence of 1.8% (4/227). The seropositive samples included two myocardial samples from a slaughterhouse, one ewe and its aborted fetus from a veterinary clinic. The results revealed that 7 out of 207 (3.4%) sheep tissue samples were PCR-positive, including two myocardial tissue samples from slaughterhouses, three aborted fetuses, and two lambs from veterinary clinics. Toxoplasma gondii vertical transmission had occurred in two of three pairs of ewes and her pups. One viable T. gondii strain (TgSheepCHn14) was isolated from the myocardial tissues of sheep from a slaughterhouse. Tachyzoites were obtained from cell cultures at 70 days following seeding in the brains and lungs of mice. This strain was non-lethal to Swiss mice. The number of parasite brain cysts in mice decreased with time post-infection (p < 0.05). Overall, the prevalence of T. gondii in the sheep samples was low. Although the samples were scattered, and not from planned collections, the current study detected T. gondii antibodies and DNA in aborted fetuses, indicating that vertical transmission could occur and maintain the parasites in sheep herds without exogenous infection.
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Affiliation(s)
- Yibao Jiang
- College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450000, China
| | - Shilin Xin
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Yiheng Ma
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Heng Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Xu Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Yurong Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
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Selim A, Marzok M, Alshammari A, Al-Jabr OA, Salem M, Wakid MH. Toxoplasma gondii infection in Egyptian domestic sheep and goats: seroprevalence and risk factors. Trop Anim Health Prod 2023; 55:182. [PMID: 37129639 DOI: 10.1007/s11250-023-03603-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/18/2023] [Indexed: 05/03/2023]
Abstract
Toxoplasma gondii is an apicomplexan protozoan parasite that has been associated with reproductive failure in small ruminants. Although T. gondii infections in ruminants and humans have been recorded in several Egypt's governorates, but little is known about the risk factors associated with T. gondii infections. In this study, 350 sheep and 290 goat serum samples from three governorates in Egypt were examined for presence of antibodies against T. gondii, and evaluate the associate risk factors for the infection. The seroprevalence in sheep and goats was 24% and 38.28%, respectively. In sheep and goats, age, sex, the presence of cats, and hygienic conditions were identified as risk factors for T. gondii infection. In addition, the prevalence rates were significantly higher in older animals more than 2 years old, females, among animals contacted with cats, and animals living in bad hygienic condition. In conclusion, sheep and goats in the examined regions are commonly infected with T. gondii. The identification of risk variables defines the sort of actions to be implemented in order to decrease, and prevent T. gondii infection in small ruminant animals and, as a result, human infection.
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Affiliation(s)
- Abdelfattah Selim
- Department of Animal Medicine (Infectious Diseases), Faculty of Veterinary Medicine, Benha University, Toukh, 13736, Egypt.
| | - Mohamed Marzok
- Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, Al-Ahsa, 31982, Saudi Arabia.
- Department of Surgery, Faculty of Veterinary Medicine, Kafr El Sheikh University, Kafr El Sheikh, Egypt.
| | - Ayed Alshammari
- Department of Biology, College of Science, University of Hafr Al-Batin, Hafr Al-Batin, Saudi Arabia
| | - Omar A Al-Jabr
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Asha, 31982, Saudi Arabia
| | - Mohamed Salem
- Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, Al-Ahsa, 31982, Saudi Arabia
- Department of Medicine and Infectious Diseases, Faculty of Veterinary Medicine, Cairo University, Cairo, 12613, Egypt
| | - Majed H Wakid
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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Mumtaz T, Awan UA, Mushtaq A, Afzal MS, Mahmood T, Wasif S, Ali A, Ajmal K, Mohamed T, Muhammad A, Liu H, Ahmed H, Cao J. Prevalence of Toxoplasmosis in Sheep and Goats in Pakistan: A Systematic Review and Meta-Analysis. Pathogens 2022; 11:pathogens11111331. [PMID: 36422583 PMCID: PMC9692471 DOI: 10.3390/pathogens11111331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/30/2022] [Accepted: 11/04/2022] [Indexed: 11/16/2022] Open
Abstract
Toxoplasmosis, a parasitic disease caused by Toxoplasma gondii, results in congenital disorders and miscarriages among livestock and humans worldwide. This systematic review and meta-analysis were conducted to determine the prevalence of T. gondii infection in sheep and goats in Pakistan from 2000 to 2020. We searched the PubMed, Scopus, EMBASE, and Google Scholar databases and selected 17 publications that fulfilled our inclusion criteria. Eight studies were conducted in Southern Punjab, six in Khyber Pakhtunkhwa, two in Northern Punjab, and one in Central Punjab. The diagnostic tests used in the included articles to confirm toxoplasmosis were the latex agglutination test in 56% of the studies, the enzyme-linked immunosorbent assay in 38%, and the indirect hemagglutination assay in 6%. The infection rates were substantially higher among sheep > 1 year of age (37%) than among sheep ≤ 1 year old (19%). Statistically significant differences in infection rates were found between male and female sheep and goats. The overall infection rate by age was also significant among sheep and goats. Sex and age variability between sheep investigations were significant, and sex heterogeneity and age homogeneity were significant among goats. Hence, robust infection control protocols should be implemented to prevent infection in animals and humans.
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Affiliation(s)
- Tanzila Mumtaz
- Department of Biosciences, COMSATS University Islamabad (CUI), Park Road, Chakh Shahzad, Islamabad 22620, Pakistan
| | - Usman Ayub Awan
- Department of Medical Laboratory Technology, The University of Haripur, Haripur 31261, Khyber Pakhtunkhwa, Pakistan
| | - Aqsa Mushtaq
- Department of Biosciences, COMSATS University Islamabad (CUI), Park Road, Chakh Shahzad, Islamabad 22620, Pakistan
| | - Muhmmad Sohail Afzal
- Department of Life Sciences, School of Science, University of Management & Technology (UMT), Lahore 22209, Punjab, Pakistan
| | - Tahir Mahmood
- Department of Industrial and Systems Engineering, College of Computing and Mathematics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
- Interdisciplinary Research Center for Smart Mobility & Logistics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Samia Wasif
- Department of Humanities, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Abid Ali
- Department of Zoology, Abdul Wali Khan University Mardan, Mardan 23200, Khyber Pakhtunkhwa, Pakistan
| | - Kiran Ajmal
- Department of Biosciences, COMSATS University Islamabad (CUI), Park Road, Chakh Shahzad, Islamabad 22620, Pakistan
| | - Teroj Mohamed
- Dental Basic Sciences Department, College of Dentistry, University of Duhok, AJ Duhok 1006, Iraq
| | - Ali Muhammad
- Department of Zoology, University of Poonch (UOP), Rawlakot 12350, Azad Jammu and Kashmir, Pakistan
| | - Hua Liu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Health Commission of the People’s Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China
| | - Haroon Ahmed
- Department of Biosciences, COMSATS University Islamabad (CUI), Park Road, Chakh Shahzad, Islamabad 22620, Pakistan
- Correspondence: (H.A.); (J.C.)
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Health Commission of the People’s Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University, Shanghai 200025, China
- Correspondence: (H.A.); (J.C.)
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Ahaduzzaman M, Hasan T. Seroprevalence of Toxoplasma gondii infection in sheep and goats from different geographical regions of the world: Systematic review and meta-analysis. Transbound Emerg Dis 2022; 69:3790-3822. [PMID: 36345796 DOI: 10.1111/tbed.14753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 09/29/2022] [Accepted: 10/18/2022] [Indexed: 11/10/2022]
Abstract
The Toxoplasma gondii is an obligate intracellular protozoan parasite which significantly impact small ruminant productivity, international animal trade and transboundary movement of animal across the globe. The seroprevalence of T. gondii infection (toxoplasmosis) in sheep and goats is widely studied in many parts of the world and there is a lack of comprehensive information on prevalence estimates considering the global and regional perspectives. The aim of the study was to use systematic review and meta-analysis methods to estimate the global and regional pooled seroprevalence of T. gondii infection in sheep and goats, as well as factors that influence prevalence estimations. Relevant articles reporting the seroprevalence of toxoplasmosis in sheep and/goats were searched in five electronic databases, including PubMed, Web of Science, Scopus, Embase and ProQuest. After the publications were checked to verify they fit the inclusion criteria, a total of 225 articles were included in the systematic review and meta-analysis, reflecting data from 70 countries/regions. The pooled prevalence was estimated using a random effect meta-analysis model. Overall, the seroprevalence of T. gondii infection was 33.86% (95% CI: 30.47-37.25%) in sheep and 31.78% (95% CI: 28.99-34.58%) in goats, with significant variation in prevalence estimates across geographical locations (p < .001). Substantial heterogeneity (I2 > 75%) was observed in most pooled seroprevalence estimates. The T. gondii infection in global sheep and goat population showed uptrend over the period. This information would be useful for epidemiologist, health authorities and farmers in order to plan future T. gondii survey and infection management strategies both locally and internationally.
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Affiliation(s)
- Md Ahaduzzaman
- Department of Medicine and Surgery, Chattogram Veterinary and Animal Sciences University, Chattogram, Bangladesh
| | - Tanjila Hasan
- Department of Medicine and Surgery, Chattogram Veterinary and Animal Sciences University, Chattogram, Bangladesh
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Amouei A, Sarvi S, Mizani A, Hashemi-Soteh MB, Salehi S, Javidnia J, Hosseini SA, Amuei F, Alizadeh A, Shabanzade S, Gholami S, Daryani A. Genetic characterization of Toxoplasma gondii in meat-producing animals in Iran. Parasit Vectors 2022; 15:255. [PMID: 35821057 PMCID: PMC9277799 DOI: 10.1186/s13071-022-05360-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The consumption of uncooked or undercooked food from infected intermediate hosts can result in Toxoplasma gondii infection in humans. However, few studies have investigated the genetic diversity of this protozoan parasite in Iran. The aim of the present study was to genetically characterize isolates of T. gondii from intermediate host animals in Mazandaran Province, Iran. METHODS Blood and heart tissue samples were collected from 204 ruminants, and brain tissue was collected from 335 birds. The prevalence of T. gondii infection in these samples was determined serologically using the modified agglutination test and by conventional PCR assays. Those PCR samples positive for T. gondii DNA and 13 DNA samples extracted from aborted fetuses in a previous study were genotyped with 12 genetic markers using the multilocus-nested PCR-restriction fragment length polymorphism (Mn-PCR-RFLP) technique. RESULTS Antibodies for parasites were found in 35.7% of the ruminant (39.1% of sheep and 26.4% of goats) samples and in 51.3% of the bird (100% of geese, 52.3% of free-range chickens and 46% of ducks) samples. Molecular detection by PCR of the repetitive 529-bp DNA fragment revealed contamination of 13.2% of ruminant (14.6% of sheep and 9.4% of goats) samples and of 9.6% of bird (11.1% of chickens, 5.7% of ducks and 0% of geese samples). The results from 30 DNA samples revealed five ToxoDB (genome database for the genus Toxoplasma) PCR-RFLP genotypes, including #1 (Type II), #2 (Type III), #10 (Type I), #27 and #48, with genotype #1 the most predominant. CONCLUSIONS As evidenced by the results of this study, ruminants and birds are infected with T. gondii in the region, suggesting that they are likely to be involved in the transmission of T. gondii to humans through meat consumption. The identification of different genotypes may suggest a higher genetic diversity of this parasite in Mazandaran, reflecting local environmental contamination. These results have important public health implications for the prevention and control strategies of infection.
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Affiliation(s)
- Afsaneh Amouei
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Parasitology, School of Medicine, Mazandaran University of Medical Science, Sari, 4847191971, Mazandaran, Iran
| | - Shahabeddin Sarvi
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Parasitology, School of Medicine, Mazandaran University of Medical Science, Sari, 4847191971, Mazandaran, Iran
| | - Azadeh Mizani
- Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Bagher Hashemi-Soteh
- Department of Clinical Biochemistry and Genetics, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeid Salehi
- Mazandaran Provincial Veterinary Department of Medical Sciences, Sari, Iran
| | - Javad Javidnia
- Department of Mycology, School of Medicine, Mazandaran University of Medical Science, Sari, Iran
| | - Seyed Abdollah Hosseini
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.,Department of Parasitology, School of Medicine, Mazandaran University of Medical Science, Sari, 4847191971, Mazandaran, Iran
| | - Fateme Amuei
- Department of Organic Chemistry, University of Mazandaran, Babolsar, Iran
| | - Ahad Alizadeh
- Metabolic Diseases Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Shafigheh Shabanzade
- Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Science, Shiraz, Iran
| | - Sara Gholami
- Department of Parasitology, School of Medicine, Mazandaran University of Medical Science, Sari, 4847191971, Mazandaran, Iran
| | - Ahmad Daryani
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran. .,Department of Parasitology, School of Medicine, Mazandaran University of Medical Science, Sari, 4847191971, Mazandaran, Iran.
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6
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Rodrigues AA, Reis SS, Moraes EDS, do Nascimento Araújo EMA, Zanine ADM, Nascimento TVC, Garcia JL, da Cunha IAL. A systematic literature review and meta-analysis of Toxoplasma gondii seroprevalence in goats. Acta Trop 2022; 230:106411. [PMID: 35304123 DOI: 10.1016/j.actatropica.2022.106411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/12/2022] [Accepted: 03/14/2022] [Indexed: 01/07/2023]
Abstract
The aim of this study was evaluate to seroprevalence of Toxoplasma gondii in goats worldwide and the main risk factors associated from 2000 to 2020, through meta-analysis with 55,317 goats from 75 reports published in seven electronic databases of major global importance. A global seroprevalence detected was 27.49% (95% CI 24.15-30.95; I2 = 99%), with the lowest percentage in Asia (20.74%; 95% CI 16.45-25.39) and highest in Central America (62.15%; 95% CI 57.28-66.90) and Europe (31.53%; 95% CI 21.71-42.26). The seropositivity in Africa and South America were (29.41%; 95% CI 19.11-40.89) and (29.76%; 95% CI 25.84-33.83), respectively. The seroprevalence was associated with presence of cats (OR 2.22; 95% CI 1.30-3.82), goats older than one year (OR 1.77; 95% CI 1, 37-2.29), females (OR 1.43; 95% CI 1.23-1.65), rearing system (extensive vs. intensive) (OR 4.82; 95% CI 1.96-11, 84) and rearing system (semi-intensive vs. intensive) (OR 1.48; 95% CI 1.48-6.13). The heterogeneity was evidenced in most world regions and the risk factors may play roles in varying the seroprevalence.
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Hajimohammadi B, Ahmadian S, Firoozi Z, Askari M, Mohammadi M, Eslami G, Askari V, Loni E, Barzegar-Bafrouei R, Boozhmehrani MJ. A Meta-Analysis of the Prevalence of Toxoplasmosis in Livestock and Poultry Worldwide. ECOHEALTH 2022; 19:55-74. [PMID: 35133541 PMCID: PMC8823692 DOI: 10.1007/s10393-022-01575-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 12/01/2021] [Indexed: 06/01/2023]
Abstract
Toxoplasma gondii causes toxoplasmosis with a global prevalence in the world. A large proportion of human illness is most frequently associated with consuming raw and undercooked meat or other animal products containing infective parasitic stages of T. gondii. This systematic review and meta-analysis study evaluated the prevalence of toxoplasmosis in cattle, sheep, camels, goats, and poultry worldwide. The search was performed in databases including PubMed, WoS, Scopus, Science Direct, Google Scholar, and ISC from 2000 to 2019 in Persian and English. The main inclusion criteria were the prevalence of toxoplasmosis among livestock and poultry and the prevalence indices by sample size. During these 20 years, the overall prevalence of toxoplasmosis in livestock and poultry was 28.3% (95% confidence interval (CI) 25-31.9%) using the random-effects meta-analysis model. The highest prevalence of T. gondii in livestock and poultry animals was found in Asia in 2014 with 89.8% (95% CI 78.5-95.5%). The lowest prevalence was found in Asia in 2013 with 1.26% (95% CI 0.4-3.8%). A quarter of livestock and poultry were infected with T. gondii. Since livestock products are globally important sources of people's diet, our findings are useful for policymakers to control T. gondii infection in livestock.
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Affiliation(s)
- Bahador Hajimohammadi
- Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Shohadaye Gomnam Blvd., Yazd, 8916188638, Islamic Republic of Iran
- Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Salman Ahmadian
- Department of Parasitology and Mycology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Zohre Firoozi
- Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Maryam Askari
- Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Masoud Mohammadi
- Cellular and Molecular Research Center, Gerash University of Medical Sciences, Gerash, Iran
| | - Gilda Eslami
- Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Shohadaye Gomnam Blvd., Yazd, 8916188638, Islamic Republic of Iran.
- Department of Parasitology and Mycology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Vahideh Askari
- Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Shohadaye Gomnam Blvd., Yazd, 8916188638, Islamic Republic of Iran
| | - Elahe Loni
- Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Shohadaye Gomnam Blvd., Yazd, 8916188638, Islamic Republic of Iran
| | - Raziyeh Barzegar-Bafrouei
- Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Javad Boozhmehrani
- Department of Parasitology and Mycology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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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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9
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Lashari M, Farooq U, Mubeen S, Hassan W, Azhar M, Shahida S, Khan M, Aslam S, Masood S, Anam M, Wajid A, Pervez M, Akhtar M, Farooq A, Zafar S, Nawaz M, Gulshan A. Seroprevalence of Toxoplasma gondii and associated hematological alterations in small ruminants of D.G. Khan district of Southern Punjab, Pakistan. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The present study was carried out to evaluate the prevalence and hematological effects of Toxoplasma gondii in sheep and goat in district Dera Ghazi Khan. Blood samples (n=204) were collected comprise goats (n=101) and sheep (n=103) alongwith age, gender and breeds of animals. Samples were collected randomly from 25 flocks of 7 different union council Viz. Vehova, Tibbi Qaisrani, Lakhani, Kohar, Tuman Qaisrani, Nutkani and Kot Qaisrani of Tehsil Taunsa Sharif at least 4 animals from each flock. All ruminants divide into three groups based on age, breed and gender. The prevalence was detected through two different kits Viz. LAT and ELISA kit. The overall prevalence suspected in goats through LAT and ELISA kit was (35.64%), (32.67%) and in sheep was (25.24%), (23.30%) respectively. The Toxoplasma gondii had a significant effect on goats in age groups and non-significant all other groups of goats and sheep. Toxoplasma gondii had a significant effect on all hematological parameters like Hemoglobin, total leukocyte cells, granulocytes, lymphocytes, platelets, and red blood cells, except monocytes. In conclusion of the current study, toxoplasmosis is prevalent among ruminants, reveals the possibility of transmission to humans on the use of host animals as protein source.
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Affiliation(s)
| | - U. Farooq
- The Islamia University of Bahawalpur, Pakistan
| | | | - W. Hassan
- The Women University of Multan, Pakistan
| | | | | | | | - S. Aslam
- Virtual University of Pakistan, Pakistan
| | - S. Masood
- Bahauddin Zakariya University, Pakistan
| | - M. Anam
- The Islamia University of Bahawalpur, Pakistan
| | - A. Wajid
- Virtual University of Pakistan, Pakistan
| | | | | | | | - S. Zafar
- The Government Sadiq College Women University, Pakistan
| | - M. Nawaz
- Bahauddin Zakariya University, Pakistan
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10
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Seroepidemiology of Toxoplasma gondii in small ruminants in Northwest Ethiopia. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2020; 22:100456. [PMID: 33308719 DOI: 10.1016/j.vprsr.2020.100456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/03/2020] [Accepted: 08/25/2020] [Indexed: 11/21/2022]
Abstract
This cross-sectional study with a cluster random sampling method was undertaken from November 2018 to May 2019 to estimate the prevalence and assess the potential risk factors of T. gondii seropositivity, and to assess the association of the T. gondii seropositivity with reproductive losses in small ruminants in Northwest Ethiopia. A total of 576 blood samples from 135 small ruminant flocks were collected and assayed for T. gondii IgG antibodies using the Toxo-latex slide agglutination test. A questionnaire survey was also conducted to gather information on the potential risk factors of T. gondii seropositivity and on the status of reproductive losses in the small ruminant flocks. The study demonstrated a high flock and animal level T. gondii seroprevalence of 96.3% (95% CI: 91% - 98%) and 70.48% (95% CI: 68% - 79%), respectively. Mixed effect logistic regression analysis of the potential risk factors showed that the odds of seropositive for T. gondii was significantly higher in sheep (OR = 1.7, 95%CI: 1.19-2.46) than in goats, in adult (OR = 1.6, 95%, CI: 1.11-2.31) than in young, in the presence of cats (OR = 2, 95%CI:1.32-3.04) than in the absence of cats, in the lack of knowledge on the role of cats as a pathogen source than knowing it (OR = 1.82, 95% CI:1.21-2.77). The study also showed that the likelihoods of experiencing the abortion, neonatal death and weak birth in the previous one year in T. gondii seropositive flocks were 20.76 (95% CI: 2.2-195.1, p < 0.001), 8.90 (95% CI: 1.99-83.0, p = 0.021) and 9.33 (95% CI: 1.1-86.2, p = 0.019) times more than the seronegative flocks, respectively. In conclusion, this study revealed high flock and animal level seroprevalence of T. gondii in the small ruminant population in northwest Ethiopia, suggesting that lamb and goat might be a source of this pathogen for human infection if their infected meat is consumed undercooked or uncooked. Besides, the observed association of T. gondii seropositivity with reproductive losses may suggest the economic importance of the pathogen for the small ruminant producers. Therefore, it warrants control attention to reduce its economic and public health burden in the study areas. Further works on the economic impacts, bioassay, isolation, and genetic characterization of the pathogen are suggested.
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Dubey JP, Murata FHA, Cerqueira-Cézar CK, Kwok OCH. Public health and economic importance of Toxoplasma gondii infections in goats: The last decade. Res Vet Sci 2020; 132:292-307. [PMID: 32711218 DOI: 10.1016/j.rvsc.2020.06.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
Toxoplasma gondii infections are common in humans and animals worldwide. Toxoplasmosis in goats continues to be of public health and economic concern. The present review summarizes worldwide information on the prevalence of clinical and subclinical infections, epidemiology, diagnosis, treatment, and genetic diversity of T. gondii in goats in the past decade. There is debate and uncertainty regarding excretion of T. gondii in milk and the ingestion of raw milk as sources of T. gondii infection for humans. Toxoplasmosis can cause abortion and deaths even in adult goats. PCR-RFLP typing of T. gondii DNA derived from viable T. gondii isolates has revealed genetic diversity in goats in North and South America. The significance of T. gondii isolates in domestic goats usually associated with wildlife in USA is discussed. This review will be of interest to biologists, parasitologists, veterinarians, and public health workers.
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Affiliation(s)
- J P Dubey
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA.
| | - F H A Murata
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - C K Cerqueira-Cézar
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - O C H Kwok
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
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Serological Survey and Associated Risk Factors on Toxoplasma gondii Infection in Goats in Mila District, Algeria. FOLIA VETERINARIA 2020. [DOI: 10.2478/fv-2020-0007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Toxoplasma gondii is a protozoan parasite prevalent in humans and other animals worldwide having medical and veterinary importance on account of reproductive failure causing significant socioeconomic losses. The aims of this study were to estimate the seroprevalence of T. gondii infection in goats, determined the possible risk factors associated, and evaluate the performances of the latex agglutination test (LAT) to anti-T. gondii antibodies screening using the indirect Enzyme-linked immunosorbent assay as a reference test (iELISA). A total of 184 serum samples from goats reared on 25 farms in Mila district from North-Eastern Algeria were collected and tested for anti-T. gondii IgG antibodies using two commercial serological tests (ELISA and LAT). A seroprevalence rate of 71.73 % and 63.58 % was obtained by both ELISA and LAT tests, respectively. The analysis of some factors thought to be related to the onset of this infection such as age, sex, management system, locality and presence of cats showed no significant relationship (P > 0.05); these factors did not seem to affect the frequency of the infection. The seropositivity level of T. gondii was significantly higher in aborted goats (P = 0.007), which suggested that they may play a significant role in pregnancy failure. In the concordance evaluation between the two serological tests (ELISA and LAT), the Cohen’s Kappa value was calculated and the results showed a K of 0.519 (p = 0.000) belonging to the range of 0.41—0.60 indicating just average agreement. The results of the Mc Nemar test showed that both tests gave significantly different results and seropositivity values (P < 0.05). The high prevalence observed in this study indicated a widespread exposure to T. gondii from goats and the potential risk of T. gondii infection for humans in North-Eastern Algeria. These results elucidate the challenges of applying serology to estimate goat exposure to T. gondii. The choice between the two serological tests will depend on their performances, as well as the availability of the equipment, laboratory conditions and the number of samples to be tested.
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Ai K, Huang CQ, Guo JJ, Cong H, He SY, Zhou CX, Cong W. Molecular Detection of Toxoplasma gondii in the Slaughter Sheep and Goats from Shandong Province, Eastern China. Vector Borne Zoonotic Dis 2019; 20:193-196. [PMID: 31545151 DOI: 10.1089/vbz.2019.2488] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
It is generally recognized that sheep are susceptible to Toxoplasma gondii and play a very important role in the transmission of toxoplasmosis to humans. In China, sheep toxoplasmosis has been reported in some regions based on serological investigations. However, little is known about sheep toxoplasmosis in Shandong province, eastern China. Thus, this study was conducted to investigate the prevalence of T. gondii infection in the slaughter sheep and goats from three cities (Weihai, Yantai, and Rizhao) of Shandong province, eastern China. From November 2016 to March 2018, a total of 692 meat samples (438 sheep and 254 goats) were collected and detected by a seminested PCR-targeted T. gondii B1 gene. The overall prevalence of T. gondii in sheep and goats were 9.84% and 10.73%, respectively. Meat collected from rural markets (16.04%) had a significantly higher T. gondii prevalence than those collected from supermarkets (6.84%) (p < 0.001). Moreover, sheep and goats raised in backyard were more easily to be infected by T. gondii compared with those raised in farms (p < 0.001). This is the first report of the molecular prevalence of T. gondii infection in sheep and goats in Shandong province, eastern China, which would provide effective data for prevention and control of sheep and human toxoplasmosis in China.
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Affiliation(s)
- Kang Ai
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, P.R. China
| | - Cui-Qin Huang
- Longyan University & Fujian Provincial Key Laboratory for the Prevention and Control of Animal Infectious Diseases and Biotechnology, Longyan, P.R. China
| | - Jing-Jing Guo
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, P.R. China
| | - Hua Cong
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, P.R. China
| | - Shen-Yi He
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, P.R. China
| | - Chun-Xue Zhou
- Department of Parasitology, Shandong University School of Basic Medicine, Jinan, P.R. China
| | - Wei Cong
- College of Marine Science, Shandong University at Weihai, Weihai, P.R. China
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Abdallah MC, Kamel M, Karima B, Samir A, Djamel K, Rachid K, Khatima AO. Cross-Sectional Survey on Toxoplasma gondii Infection in Cattle, Sheep, and Goats in Algeria: Seroprevalence and Risk Factors. Vet Sci 2019; 6:vetsci6030063. [PMID: 31295942 PMCID: PMC6789635 DOI: 10.3390/vetsci6030063] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/29/2019] [Accepted: 07/03/2019] [Indexed: 11/16/2022] Open
Abstract
A cross-sectional study aimed at assessing the seroprevalence and identifying the risk factors for Toxoplasma gondii infection in cattle, sheep, and goats in eight provinces located in two main Algerian agro-ecological zones was carried out from October 2015 to March 2018. Blood sera from 4074 animals of both sexes were tested for the presence of anti-T. gondii IgG antibodies, using the indirect, enzyme-linked, immunosorbent assay technique (ELISA). Moreover, to identify the potential risk factors of T. gondii infection, a survey through a breeders' questionnaires was conducted. Nearly one-fourth of the total number of animals tested (1024/4074)-i.e., 25.1%--were seropositive. The seroprevalence in cattle, sheep, and goats was 28.7%, 25.6%, and 11.9%, respectively. The area, sex, age, and herd size were identified as risk factors for T. gondii infection. Higher seropositivity rates were recorded in cows and goats (odds ratio (OR) = 1.63 and 6.4), in old animals (cattle, OR = 2.1; sheep, OR = 1.9; and goat, OR = 3.9), and in small size herds (cattle, OR = 2.5; sheep, OR = 1.9; goat, OR = 2.2). In conclusion, there is widespread T. gondii infection in cattle, sheep, and goats in these two strategic agricultural areas. The identification of the risk factors determines the type of measures and strategies to be undertaken to reduce, control, and prevent T. gondii infection in domestic animals, and thereby reduce human infection.
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Affiliation(s)
- Mohamed-Cherif Abdallah
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Miroud Kamel
- Laboratoire Epidémio-surveillance, santé, productions et reproduction, expérimentation et thérapie cellulaire des animaux domestiques et sauvages (ESSPRETCADS), Institut des Sciences Vétérinaires, Université Chadli Bendjedid El-Tarf, ElTarf 36000, Algeria
| | - Benfodil Karima
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Ansel Samir
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Khelef Djamel
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Kaidi Rachid
- Laboratoire Biotechnologie et Reproduction Animale (LBRA), Institut des Sciences Vétérinaires Blida, Ouled Yaïch, Algeria
| | - Ait-Oudhia Khatima
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria.
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Abdallah MC, Kamel M, Karima B, Samir A, Djamel K, Rachid K, Khatima AO. Cross-Sectional Survey on Toxoplasma gondii Infection in Cattle, Sheep, and Goats in Algeria: Seroprevalence and Risk Factors. Vet Sci 2019. [PMID: 31295942 DOI: 10.3390/vetsci6030063.pmid:31295942;pmcid:pmc6789635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
A cross-sectional study aimed at assessing the seroprevalence and identifying the risk factors for Toxoplasma gondii infection in cattle, sheep, and goats in eight provinces located in two main Algerian agro-ecological zones was carried out from October 2015 to March 2018. Blood sera from 4074 animals of both sexes were tested for the presence of anti-T. gondii IgG antibodies, using the indirect, enzyme-linked, immunosorbent assay technique (ELISA). Moreover, to identify the potential risk factors of T. gondii infection, a survey through a breeders' questionnaires was conducted. Nearly one-fourth of the total number of animals tested (1024/4074)-i.e., 25.1%--were seropositive. The seroprevalence in cattle, sheep, and goats was 28.7%, 25.6%, and 11.9%, respectively. The area, sex, age, and herd size were identified as risk factors for T. gondii infection. Higher seropositivity rates were recorded in cows and goats (odds ratio (OR) = 1.63 and 6.4), in old animals (cattle, OR = 2.1; sheep, OR = 1.9; and goat, OR = 3.9), and in small size herds (cattle, OR = 2.5; sheep, OR = 1.9; goat, OR = 2.2). In conclusion, there is widespread T. gondii infection in cattle, sheep, and goats in these two strategic agricultural areas. The identification of the risk factors determines the type of measures and strategies to be undertaken to reduce, control, and prevent T. gondii infection in domestic animals, and thereby reduce human infection.
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Affiliation(s)
- Mohamed-Cherif Abdallah
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Miroud Kamel
- Laboratoire Epidémio-surveillance, santé, productions et reproduction, expérimentation et thérapie cellulaire des animaux domestiques et sauvages (ESSPRETCADS), Institut des Sciences Vétérinaires, Université Chadli Bendjedid El-Tarf, ElTarf 36000, Algeria
| | - Benfodil Karima
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Ansel Samir
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Khelef Djamel
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria
| | - Kaidi Rachid
- Laboratoire Biotechnologie et Reproduction Animale (LBRA), Institut des Sciences Vétérinaires Blida, Ouled Yaïch, Algeria
| | - Ait-Oudhia Khatima
- Laboratoire Hygiène Alimentaire et Système Assurance Qualité (Hasaq), Ecole Nationale Supérieure Vétérinaire d'Alger. Rue Issad. Oued Smar., Bab Ezzouar, Algeria.
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Fatima T, Mehnaz S, Wang M, Yang J, Sajid MS, Shen B, Zhao J. Seroprevalence of Toxoplasma gondii in one-humped camels (Camelus dromedarius) of Thal and Cholistan deserts, Punjab, Pakistan. Parasitol Res 2018; 118:307-316. [DOI: 10.1007/s00436-018-6124-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 10/16/2018] [Indexed: 11/30/2022]
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Seroprevalence and Risk Factors of Toxoplasma gondii Infection among Domestic Ruminants in East Hararghe Zone of Oromia Region, Ethiopia. Vet Med Int 2018; 2018:4263470. [PMID: 29887984 PMCID: PMC5985087 DOI: 10.1155/2018/4263470] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 03/09/2018] [Accepted: 04/04/2018] [Indexed: 11/17/2022] Open
Abstract
A cross-sectional study was carried out from July 2011 to September 2013 to assess the seroprevalence and identify risk factors of Toxoplasma gondii infection in domestic ruminants of East Hararghe zone of Oromia region, Ethiopia. Sera of 1360 domestic ruminants were analyzed for the presence of anti-T. gondii IgG antibodies using the indirect enzyme-linked immunosorbent assay (iELISA). Additionally, the owners were also interviewed using a structured questionnaire to identify the potential risk factors of T. gondii infection. Overall, the prevalence of T. gondii infection in domestic ruminants was 22.2% (302/1360). The seroprevalence in sheep, goats, cattle, and camels was 33.7%, 27.6%, 10.7%, and 14.4%, respectively. District, species, sex, age, and water source were identified as risk factors for T. gondii infection. Increased seropositivity was observed in females (OR = 2.63) and also with the use of pond (OR = 4.25) and pipe (OR = 9.57) water sources in sheep; age >1 year old (OR = 3.45) and with drinking from pond (OR = 6.03) and pipe (OR = 11.61) water sources in goats; with the use of pond (OR = 5.60) and pipe (OR = 10.68) water sources in cattle; and in >4-year-old camels (OR = 2.49). In conclusion, T. gondii infection is common and widespread among the domestic ruminants of the study area, indicating the potential transmission to humans from these animals when they are used as a source of food. Hence, it is crucial to raise awareness of the people about T. gondii infection and conduct further study to explore the impact of the disease on food animal production.
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Zhou Z, Wu Y, Chen Y, Wang Z, Hu S, Zhou R, Dong C, Lin H, Nie K. Molecular and serological prevalence of Toxoplasma gondii and Anaplasma spp. infection in goats from Chongqing Municipality, China. ACTA ACUST UNITED AC 2018; 25:20. [PMID: 29633708 PMCID: PMC5892175 DOI: 10.1051/parasite/2018024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 03/26/2018] [Indexed: 12/01/2022]
Abstract
Toxoplasmosis and anaplasmosis are severe zoonotic diseases, the former caused by Toxoplasma gondii and the latter by Anaplasma spp. In the present study, 332 goat blood samples were randomly collected from Chongqing Municipality, China to screen for T. gondii and Anaplasma spp. We used a polymerase chain reaction (PCR) to detect DNA, and enzyme-linked immunosorbent assay (ELISA) to test for T. gondii antibodies. The prevalence of T. gondii and Anaplasma spp. was 38% and 35% respectively by PCR, and 42% for T. gondii antibodies by ELISA. The co-infection rate by T. gondii and Anaplasma was 13%, where the two predominant pathogens co-infecting were Anaplasma phagocytophilum + A. bovis (10%), followed by T. gondii + A. phagocytophilum (9.64%). While co-infection by three pathogens varied ranging from 1.81% to 5.72%, less than 1% of goats were found to be positive for four pathogens. This is the first investigation of T. gondii and Anaplasma spp. infection in goats from Chongqing.
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Affiliation(s)
- Zuoyong Zhou
- College of Animal Science, Rongchang Campus of Southwest University, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China - Veterinary Science Engineering Research Center of Chongqing, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China
| | - Yutong Wu
- Guizhou Institute of Animal Husbandry and Veterinary Medicine, No. 2 Laolipo, Naming District, Guizhou 550005, PR China
| | - Yiwang Chen
- College of Animal Science, Rongchang Campus of Southwest University, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China - Veterinary Science Engineering Research Center of Chongqing, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China
| | - Zhiying Wang
- College of Animal Science, Rongchang Campus of Southwest University, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China - Veterinary Science Engineering Research Center of Chongqing, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China
| | - Shijun Hu
- College of Animal Science, Rongchang Campus of Southwest University, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China - Veterinary Science Engineering Research Center of Chongqing, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China
| | - Rongqiong Zhou
- College of Animal Science, Rongchang Campus of Southwest University, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China - Veterinary Science Engineering Research Center of Chongqing, No. 160 Xueyuan Road, Rongchang District, Chongqing 402460, PR China
| | - Chunxia Dong
- Chongqing Animal Disease Prevention and Control Center, Chongqing 400174, PR China
| | - Hongquan Lin
- Chongqing Animal Disease Prevention and Control Center, Chongqing 400174, PR China
| | - Kui Nie
- College of Animal Science and Technology, Southwest University, Beibei District Chongqing 400715, PR China
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Serological survey of antibodies to Toxoplasma gondii and Neospora caninium in goat population in Canary Islands (Macaronesia Archipelago, Spain). Small Rumin Res 2017. [DOI: 10.1016/j.smallrumres.2016.11.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zhang N, Wang S, Wang D, Li C, Zhang Z, Yao Z, Li T, Xie Q, Liu S, Zhang H. Seroprevalence of Toxoplasma gondii infection and risk factors in domestic sheep in Henan province, central China. ACTA ACUST UNITED AC 2016; 23:53. [PMID: 27882868 PMCID: PMC5134671 DOI: 10.1051/parasite/2016064] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 11/13/2016] [Indexed: 11/14/2022]
Abstract
Sheep are highly susceptible to infections with Toxoplasma gondii and play a major role in the transmission of toxoplasmosis to humans. In the present study, 779 serum samples from sheep were collected from Henan province, central China from March 2015 to May 2016, and antibodies to T. gondii were detected by modified agglutination test (MAT). The overall seroprevalence of T. gondii in sheep was 12.71% (99/779). The risk factors significantly associated with T. gondii seroprevalence were the geographical origin, age, presence of cats, and the rearing system. This is the first report of T. gondii infection in sheep in Henan province, central China, and of an association of seropositivity to T. gondii with risk factors.
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Affiliation(s)
- Nian Zhang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China - Xinxiang Assegal Medical Examination Institute, Xinxiang, Henan 453003, PR China
| | - Shuai Wang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Dong Wang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Chaoying Li
- Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Zhenchao Zhang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Zhijun Yao
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Tingting Li
- The Fourth Clinical College, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Qing Xie
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Shiguo Liu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
| | - Haizhu Zhang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, Henan 453003, PR China
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Bawm S, Maung WY, Win MY, Thu MJ, Chel HM, Khaing TA, Wai SS, Htun LL, Myaing TT, Tiwananthagorn S, Igarashi M, Katakura K. Serological Survey and Factors Associated with Toxoplasma gondii Infection in Domestic Goats in Myanmar. SCIENTIFICA 2016; 2016:4794318. [PMID: 26904362 PMCID: PMC4745940 DOI: 10.1155/2016/4794318] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 01/18/2016] [Indexed: 05/14/2023]
Abstract
Goat farming is important for the livelihood of millions of rural people because it contributes to food security and creation of assets. However, infection of goats with Toxoplasma gondii could be a source of parasite transmission to humans. The information on T. gondii infection of goat was not reported yet in Myanmar. A total of 119 goat serum samples were collected from three cities in the central region of Myanmar for T. gondii antibody survey. With the occurrence value obtained in this first study, a second one, more complete, with larger number (162) of animals and properties, was carried out and the risk factors and prevalence were determined. In both studies the samples were analyzed by the LAT. Of these, 32 (11.4%) samples were showed to be positive. The infection was associated with the presence of cats at the farm (odds ratio [OR] = 4.66, 95% confidential interval [CI] = 1.03-21.06), farming with different animal species (sheep, cattle, and pigs) (OR = 4.33, 95% CI = 1.57-11.94), and farming without good management practices (OR = 0.23, 95% CI = 0.06-0.83). This is the first T. gondii prevalence study in goats in the country.
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Affiliation(s)
- Saw Bawm
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
- *Saw Bawm:
| | - Wint Yi Maung
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
- Livestock Breeding and Veterinary Department (Head Quarter), Nay Pyi Taw 15011, Myanmar
| | - Myat Yee Win
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
- Livestock Breeding and Veterinary Department (Head Quarter), Nay Pyi Taw 15011, Myanmar
| | - May June Thu
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
- Unit of Risk Analysis and Management, Research Centre for Zoonosis Control, Hokkaido University, Sapporo 060-0818, Japan
| | - Hla Myet Chel
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
| | - Tin Aye Khaing
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
- Nay Pyi Taw Development Committee, Nay Pyi Taw 15011, Myanmar
| | - Soe Soe Wai
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
| | - Lat Lat Htun
- Department of Pharmacology and Parasitology, University of Veterinary Science, Nay Pyi Taw 15013, Myanmar
| | | | - Saruda Tiwananthagorn
- Department of Veterinary Biosciences and Veterinary Public Health, Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Makoto Igarashi
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
| | - Ken Katakura
- Laboratory of Parasitology, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
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Guo M, Dubey JP, Hill D, Buchanan RL, Gamble HR, Jones JL, Pradhan AK. Prevalence and risk factors for Toxoplasma gondii infection in meat animals and meat products destined for human consumption. J Food Prot 2015; 78:457-76. [PMID: 25710166 DOI: 10.4315/0362-028x.jfp-14-328] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Toxoplasma gondii is a protozoan parasite that is responsible for approximately 24% of all estimated deaths attributed to foodborne pathogens in the United States. Human infection results from accidental ingestion of oocysts from the environment, in water, or on insufficiently washed produce or from consumption of raw or undercooked meat products that contain T. gondii tissue cysts. This review focused on studies of T. gondii in meat because many human T. gondii infections are acquired through consumption of raw or undercooked meat. Prevalence of T. gondii is higher in conventionally reared pigs, sheep, and poultry than in cattle and is greater in meat products from organic than from conventionally reared meat animals because of outdoor access, which poses substantially greater opportunities for exposure to infected rodents, wildlife, and oocyst-contaminated feed, water, or environmental surfaces. Risk factors related to T. gondii exposure for livestock include farm type, feed source, presence of cats, methods of rodent and bird control, methods of carcass handling, and water quality. This review serves as a useful resource and information repository for informing quantitative risk assessment studies for T. gondii infection in humans through meat consumption.
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Affiliation(s)
- Miao Guo
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland 20742, USA
| | - Jitender P Dubey
- U.S. Department of Agriculture, Agricultural Research Service, Beltsville Agriculture Research Center, Animal Parasitic Diseases Laboratory, Beltsville, Maryland 20705, USA
| | - Dolores Hill
- U.S. Department of Agriculture, Agricultural Research Service, Beltsville Agriculture Research Center, Animal Parasitic Diseases Laboratory, Beltsville, Maryland 20705, USA
| | - Robert L Buchanan
- Department of Nutrition and Food Science, Center for Food Safety and Security Systems, University of Maryland, College Park, Maryland 20742, USA
| | - H Ray Gamble
- Fellowships Office, National Academy of Sciences, Washington, DC 20001, USA
| | - Jeffrey L Jones
- Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA
| | - Abani K Pradhan
- Department of Nutrition and Food Science, Center for Food Safety and Security Systems, University of Maryland, College Park, Maryland 20742, USA.
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Xu P, Li X, Guo L, Li B, Wang J, Yu D, Zhao Q, Liu XG. Seroprevalence of Toxoplasma gondii infection in Liaoning cashmere goat from northeastern China. ACTA ACUST UNITED AC 2014; 21:22. [PMID: 24845552 PMCID: PMC4027814 DOI: 10.1051/parasite/2014023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/04/2014] [Indexed: 12/03/2022]
Abstract
In the present study, serum samples from 650 goats were collected from five counties between May and June 2012 and antibodies to Toxoplasma gondii were detected by indirect haemagglutination assay; 58 (9%) had antibodies to T. gondii with antibody titres of 1:64 to 1:1024. Seropositive samples were distributed in all five counties: seroprevalences in Kuandian county (15%, 21/139, 95% confidence interval [CI] 9–21%) were statistically different from the four other counties (Gaizhou, Huanren, Xiuyan and Liaoyang), and the seroprevalence difference between Xiuyan county (12%, 15/127, 95% CI 6–17%) and two other counties (Huanren, Liaoyang) was significantly different (P < 0.05). To our knowledge, this is the first report of the seroprevalence of T. gondii exposure in Liaoning cashmere goat in China. Our results indicated that Liaoning cashmere goat could be a potential reservoir for the transmission of T. gondii in Liaoning Province.
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Affiliation(s)
- Peng Xu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China - College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, P.R. China
| | - Xia Li
- Jinzhou Center for Animal Disease Control and Prevention, Jinzhou, Liaoning Province 121004, P.R. China
| | - Ling Guo
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Bing Li
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Jun Wang
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Di Yu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
| | - Quan Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province 130118, P.R. China
| | - Xiao-Gang Liu
- College of Animal Husbandry and Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning Province 121001, P.R. China
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Zhang M, Yang Z, Wang S, Tao L, Xu L, Yan R, Song X, Li X. Detection of Toxoplasma gondii in shellfish and fish in parts of China. Vet Parasitol 2014; 200:85-9. [DOI: 10.1016/j.vetpar.2013.10.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 10/16/2013] [Accepted: 10/28/2013] [Indexed: 10/26/2022]
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25
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Miao Q, Wang X, She LN, Fan YT, Yuan FZ, Yang JF, Zhu XQ, Zou FC. Seroprevalence of Toxoplasma gondii in horses and donkeys in Yunnan Province, Southwestern China. Parasit Vectors 2013; 6:168. [PMID: 23742078 PMCID: PMC3679964 DOI: 10.1186/1756-3305-6-168] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 05/31/2013] [Indexed: 11/16/2022] Open
Abstract
Background Toxoplasma gondii is an intracellular protozoan parasite that infects almost all warm-blooded animals, including humans, with a worldwide distribution. There have been limited reports about the seroprevalence of T. gondii infection in equids around the world and little is known about the seroprevalence of T. gondii in equids in southwestern China, in particular in Yunnan Province. The objective of the present investigation was to estimate the seroprevalence of T. gondii infection in equids in this area. Methods A total of 399 serum samples (266 from horses and 133 from donkeys) were collected in 2012, and assayed for T. gondii antibodies by Indirect Haemagglutination (IHA) test using a commercially available kit. Results A total of 108 (27.1%) equids, including 81 (30.5%) horses and 27 (20.3%) donkeys were positive for T. gondii antibodies, and the seroprevalence ranged from 18.8% to 37.5% among different sampling areas. The seroprevalence was 27.4% and 26.8% for male and female equids, respectively, and the difference was not statistically significant (P > 0.05). The seroprevalence ranged from 21% to 32.9% among different age groups, and the difference was not statistically significant (P > 0.05). Conclusions The results of the present survey indicated the existence of high T. gondii seroprevalence in Yunnan Province, southwestern China, which has significant public health concern. Therefore, it is imperative that improved integrated measures be carried out to prevent and control T. gondii infection in equids in the studied region.
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Affiliation(s)
- Qiang Miao
- College of Animal Science and Technology, Yunnan Agricultural University, Yunnan Province 650201, Kunming, PR China
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Chang QC, Zheng X, Qiu JH, Wang CR, Zhu XQ. Seroprevalence ofToxoplasma gondiiInfection in Fattening Pigs in Northeast China. J Parasitol 2013; 99:544-5. [DOI: 10.1645/12-102.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Yang N, Li H, He J, Mu M, Yang S. Seroprevalence ofToxoplasma gondiiInfection in Domestic Sheep in Liaoning Province, Northeastern China. J Parasitol 2013; 99:174-5. [DOI: 10.1645/ge-3201.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Qiu JH, Wang CR, Zhang X, Sheng ZH, Chang QC, Zhao Q, Wu SM, Zou FC, Zhu XQ. Seroprevalence of Toxoplasma gondii in Beef Cattle and Dairy Cattle in Northeast China. Foodborne Pathog Dis 2012; 9:579-82. [DOI: 10.1089/fpd.2011.1104] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jian-Hua Qiu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People's Republic of China
| | - Chun-Ren Wang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People's Republic of China
| | - Xu Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People's Republic of China
| | - Zhong-Hua Sheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, People's Republic of China
| | - Qiao-Chen Chang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People's Republic of China
| | - Quan Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin Province, People's Republic of China
| | - Song-Ming Wu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, People's Republic of China
| | - Feng-Cai Zou
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, Yunnan Province, People's Republic of China
| | - Xing-Quan Zhu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, People's Republic of China
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, People's Republic of China
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, Yunnan Province, People's Republic of China
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Duan G, Tian YM, Li BF, Yang JF, Liu ZL, Yuan FZ, Zhu XQ, Zou FC. Seroprevalence of Toxoplasma gondii infection in pet dogs in Kunming, Southwest China. Parasit Vectors 2012; 5:118. [PMID: 22704457 PMCID: PMC3407528 DOI: 10.1186/1756-3305-5-118] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 06/15/2012] [Indexed: 11/10/2022] Open
Abstract
Background Toxoplasmosis is a zoonotic parasitic disease caused by the protozoan Toxoplasma gondii, which infects almost all warm-blooded animals, including humans, with a worldwide distribution. However, little is known of T. gondii seroprevalence in pet dogs in Kunming, the capital of Yunnan Province, southwest China. The objective of this investigation was to estimate the seroprevalence of T. gondii infection in pet dogs in this area. Methods A total of 611 serum samples were collected from 7 pet hospitals in Kunming, and assayed for T. gondii antibodies by the indirect haemagglutination (IHA) using a commercially-marked kit. Results 132 (21.6%) pet dogs were positive for T. gondii antibodies, and the seroprevalence ranged from 17.3% to 34.7% among different sampling regions, the difference was statistically significant (P < 0.05). The T. gondii seroprevalence in female and male dogs were 20.8% and 22.4%, respectively, the difference was not statistically significant (P > 0.05). The seroprevalence ranged from 17.5% to 23.6% among different age groups, but the difference was not statistically significant (P > 0.05), and there were no interactions in statistics (P > 0.05) between gender and age of pet dogs in the region. Conclusions The findings of the present survey indicate high T. gondii seroprevalance in pet dogs in Kunming, southwest China, posing significant public health concern. It is necessary to enhance integrated strategies and measures to prevent and control T. gondii infection in pet dogs in this area.
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Affiliation(s)
- Gang Duan
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, People's Republic of China
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Detection of Toxoplasma gondii in free-range chickens in China based on circulating antigens and antibodies. Vet Parasitol 2012; 185:72-7. [DOI: 10.1016/j.vetpar.2011.10.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 10/21/2011] [Accepted: 10/24/2011] [Indexed: 11/18/2022]
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Zhou DH, Zhao FR, Lu P, Xia HY, Xu MJ, Yuan LG, Yan C, Huang SY, Li SJ, Zhu XQ. Seroprevalence of Toxoplasma gondii infection in dairy cattle in southern China. Parasit Vectors 2012; 5:48. [PMID: 22401571 PMCID: PMC3320535 DOI: 10.1186/1756-3305-5-48] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 03/09/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As an obligate intracellular parasite, Toxoplasma gondii can infect humans and almost all warm-blooded animals. The consumption of raw or undercooked beef and milk is considered a risk for T. gondii infection in humans. However, little is known of T. gondii infection in dairy cattle in metropolitan Guangzhou, southern China. This study was performed to determine the seroprevalence of T. gondii in dairy cattle in Guangzhou, southern China. FINDINGS Serum samples were collected from 350 dairy cattle on five farms in Guangzhou, China from 2009 to 2010, and all of the 350 serum samples were examined for specific antibodies to T. gondii by indirect hemagglutination antibody test (IHA). The overall seroprevalence of T. gondii in dairy cattle was 5.7% (20/350). Among these examined dairy cattle, dairy cattle which were < 6 year old or ≥ 5 year old had the highest seroprevalence of 12.5% followed by those dairy cattle which were < 5 year old or ≥ 4 year old (8%); dairy cattle with 3 pregnancies had the highest seroprevalence (11.5%), among the examined dairy cattle, although these differences were not statistically significant. CONCLUSIONS The results of the present survey indicate that T. gondii infection is prevalent in dairy cattle of all age ranges in Guangzhou, southern China, which may be a risk factor for human infection with T. gondii in this region.Dong-Hui Zhou and Fu-Rong Zhao contributed equally.
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Affiliation(s)
- Dong-Hui Zhou
- Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, People's Republic of China
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Wu SM, Danba C, Huang SY, Zhang DL, Chen J, Gong G, Xu MJ, Yuan ZG, Zhu XQ. Seroprevalence of Toxoplasma gondii Infection in Tibetan Sheep in Tibet, China. J Parasitol 2011; 97:1188-9. [DOI: 10.1645/ge-2912.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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