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González-Barrio D, Carpio AJ, Preite L, Miguel-Vicedo M, Estévez-Reboredo RM, González-Viadero M, Barba-Sánchez R, Calero-Bernal R, Carmena D, Fuentes I. Toxoplasma gondii exposure in wildlife in Spain: Is there any predictable threat for humans and domestic animals? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173290. [PMID: 38782291 DOI: 10.1016/j.scitotenv.2024.173290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/23/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024]
Abstract
Toxoplasmosis is a parasitic zoonosis of key importance in veterinary and public health. This article summarizes the available data (from 2000 to 2023) of exposition to Toxoplasma gondii in wildlife species in Spain based on a systematic bibliographic search, as well as further analysis of its potential relationship with environmental variables, biodiversity, anthropogenic impact on the habitat, and the reported human cases of toxoplasmosis. The overall seroprevalence of T. gondii in carnivorous mammals, birds, ungulate and lagomorph species in Spain was estimated at 69.3 %, 36.4 %, 18.4 %, and 16.2 %, respectively. Among the studies considered, great heterogeneity was observed both between and within taxonomic groups [Cohen's d > 0.8; X2 = 1039.10, df = 4 (p < 0.01) I2 = 97 %, r2 = 1.88, (p < 0.001)] and between and within bioregions [Cohen's d > 0.5; X2 = 368.59, df = 4 (p < 0.01)]. The results of a generalized linear model explaining T. gondii seroprevalence in wild animals suggest the influence of abiotic variables [wetland (p < 0.001), unvegetated (p < 0.001), isothermality (p < 0.001), and mean temperature during wettest quarter (p < 0.05)] and number of intermediate host species as positively associated with increased exposure of wildlife to T. gondii (p < 0.01). Toxoplasma gondii DNA was detected in both wild birds and wild mammals (range: 0.0-51.2 %) mainly from north-centre, northeast, and central-west of Spain. Regarding hospitalisation rates due to toxoplasmosis in humans, some abiotic variables [permanent crops (p < 0.05) and mean temperature during wettest quarter (p < 0.05)] showed a positive association. Despite certain limitations, this research evidences a substantial gap of knowledge on the implication of wildlife in the life cycle of T. gondii in Spain. This lack of knowledge is particularly evident in areas where the human-livestock-wildlife interface overlaps, preventing us from accurately determining its true distribution in different habitats, as well as its potential direct or indirect implications on public and veterinary health.
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Affiliation(s)
- David González-Barrio
- Parasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Health In-stitute Carlos III, Majadahonda, Spain.
| | - Antonio J Carpio
- Instituto de Investigación en Recursos Cinegéticos, IREC (UCLM-CSIC-JCCM), Ciudad Real, Spain; Department of Botany, Ecology and Plant Physiology, University of Cordoba, Campus de Rabanales, Cordoba, Spain.
| | - Ludovica Preite
- Instituto de Investigación en Recursos Cinegéticos, IREC (UCLM-CSIC-JCCM), Ciudad Real, Spain.
| | - Mariola Miguel-Vicedo
- Parasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Health In-stitute Carlos III, Majadahonda, Spain; PhD Programme in Biomedical Sciences and Public Health, IMIENS, National University of Distance Education (UNED), Madrid, Spain
| | - Rosa M Estévez-Reboredo
- Epidemiological Surveillance Analysis Area, Spanish National Centre for Epidemiology, Health Institute Carlos III, Madrid, Spain.
| | - María González-Viadero
- Epidemiological Surveillance Analysis Area, Spanish National Centre for Epidemiology, Health Institute Carlos III, Madrid, Spain
| | - Raquel Barba-Sánchez
- Epidemiological Surveillance Analysis Area, Spanish National Centre for Epidemiology, Health Institute Carlos III, Madrid, Spain; The National School of Public Health, Health Institute Carlos III, Madrid, Spain.
| | - Rafael Calero-Bernal
- SALUVET, Department of Animal Health, Faculty of Veterinary, Complutense University of Madrid, Madrid, Spain.
| | - David Carmena
- Parasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Health In-stitute Carlos III, Majadahonda, Spain; CIBER Infectious Diseases (CIBERINFEC), Health Institute Carlos III, 28029 Madrid, Spain.
| | - Isabel Fuentes
- Parasitology Reference and Research Laboratory, Spanish National Centre for Microbiology, Health In-stitute Carlos III, Majadahonda, Spain.
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Rutenberg D, Zhang Y, Montoya JG, Sinnott J, Contopoulos-Ioannidis DG. The Meat of the Matter. N Engl J Med 2024; 390:1612-1618. [PMID: 38692295 DOI: 10.1056/nejmcps2311297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Affiliation(s)
- David Rutenberg
- From the Department of Medicine, Division of Infectious Disease and International Medicine, Morsani College of Medicine, University of South Florida (D.R., Y.Z., J.S.), and the Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute (Y.Z.) - both in Tampa; and the Dr. Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Palo Alto (J.G.M., D.G.C.-I.), and the Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford (D.G.C.-I.) - both in California
| | - Yumeng Zhang
- From the Department of Medicine, Division of Infectious Disease and International Medicine, Morsani College of Medicine, University of South Florida (D.R., Y.Z., J.S.), and the Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute (Y.Z.) - both in Tampa; and the Dr. Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Palo Alto (J.G.M., D.G.C.-I.), and the Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford (D.G.C.-I.) - both in California
| | - Jose G Montoya
- From the Department of Medicine, Division of Infectious Disease and International Medicine, Morsani College of Medicine, University of South Florida (D.R., Y.Z., J.S.), and the Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute (Y.Z.) - both in Tampa; and the Dr. Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Palo Alto (J.G.M., D.G.C.-I.), and the Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford (D.G.C.-I.) - both in California
| | - John Sinnott
- From the Department of Medicine, Division of Infectious Disease and International Medicine, Morsani College of Medicine, University of South Florida (D.R., Y.Z., J.S.), and the Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute (Y.Z.) - both in Tampa; and the Dr. Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Palo Alto (J.G.M., D.G.C.-I.), and the Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford (D.G.C.-I.) - both in California
| | - Despina G Contopoulos-Ioannidis
- From the Department of Medicine, Division of Infectious Disease and International Medicine, Morsani College of Medicine, University of South Florida (D.R., Y.Z., J.S.), and the Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute (Y.Z.) - both in Tampa; and the Dr. Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Palo Alto (J.G.M., D.G.C.-I.), and the Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford (D.G.C.-I.) - both in California
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Zhu S, Camp L, Patel A, VanWormer E, Shapiro K. High prevalence and diversity of Toxoplasma gondii DNA in feral cat feces from coastal California. PLoS Negl Trop Dis 2023; 17:e0011829. [PMID: 38100522 PMCID: PMC10756541 DOI: 10.1371/journal.pntd.0011829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 12/29/2023] [Accepted: 11/30/2023] [Indexed: 12/17/2023] Open
Abstract
Toxoplasma gondii is a zoonotic parasite that can cause severe morbidity and mortality in warm-blooded animals, including marine mammals such as sea otters. Free-ranging cats can shed environmentally resistant T. gondii oocysts in their feces, which are transported through rain-driven runoff from land to sea. Despite their large population sizes and ability to contribute to environmental oocyst contamination, there are limited studies on T. gondii oocyst shedding by free-ranging cats. We aimed to determine the frequency and genotypes of T. gondii oocysts shed by free-ranging domestic cats in central coastal California and evaluate whether genotypes present in feces are similar to those identified in sea otters that died from fatal toxoplasmosis. We utilized a longitudinal field study of four free-ranging cat colonies to assess oocyst shedding prevalence using microscopy and molecular testing with polymerase chain reaction (PCR). T. gondii DNA was confirmed with primers targeting the ITS1 locus and positive samples were genotyped at the B1 locus. While oocysts were not visualized using microscopy (0/404), we detected T. gondii DNA in 25.9% (94/362) of fecal samples. We genotyped 27 samples at the B1 locus and characterized 13 of these samples at one to three additional loci using multi locus sequence typing (MLST). Parasite DNA detection was significantly higher during the wet season (16.3%, 59/362) compared to the dry season (9.7%; 35/362), suggesting seasonal variation in T. gondii DNA presence in feces. High diversity of T. gondii strains was characterized at the B1 locus, including non-archetypal strains previously associated with sea otter mortalities. Free-ranging cats may thus play an important role in the transmission of virulent T. gondii genotypes that cause morbidity and mortality in marine wildlife. Management of free-ranging cat colonies could reduce environmental contamination with oocysts and subsequent T. gondii infection in endangered marine mammals and people.
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Affiliation(s)
- Sophie Zhu
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
| | - Lauren Camp
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
- Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
| | - Anika Patel
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
| | - Elizabeth VanWormer
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, Nebraska, United States of America
- School of Natural Resources, University of Nebraska, Lincoln, Nebraska, United States of America
| | - Karen Shapiro
- Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, Davis, California, United States of America
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Ren H, Mao G, Zhang Y, Zhu N, Liang Q, Jiang Y, Yang Y. Isolation and Characterization of a Viable Toxoplasma gondii from Captive Caracal ( Caracal caracal). Pathogens 2023; 12:1412. [PMID: 38133295 PMCID: PMC10747901 DOI: 10.3390/pathogens12121412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/23/2023] Open
Abstract
Toxoplasma gondii is a widespread protozoan parasite that infects most warm-blooded animals, and felids can serve as intermediate and definitive hosts. Pathological diagnosis and serological and etiological investigations were conducted on a captive caracal (Caracal caracal) carcass collected from China in 2022. Pathological diagnosis revealed that cardiac insufficiency, pulmonary edema, hepatic failure, and renal insufficiency were the causes of the caracal's death. A modified agglutination test (cut-off: 1:25) revealed that IgG antibodies against T. gondii were present in the myocardium juice (1:1600), ascitic fluid (1:3200), and hydropericardium (1:800). A viable T. gondii (TgCaracalCHn2) strain was isolated from the tissue samples (heart, brain, spleen, and skeletal muscle) of this caracal using a mouse bioassay. The genotype of TgCaracalCHn2 was ToxoDB#5 (Type II variant), as determined via RFLP-PCR. The strain was avirulent in Swiss mice and matched the prediction of ROP18 and ROP5 gene alleles of TgCaracalCHn2 (2/2). Mild tissue cysts (203 ± 265) were observed in mice brains after inoculation with TgCaracalCHn2 tachyzoites. ToxoDB#5 is the dominant genotype in North American wildlife, and this is the first documented isolation of T. gondii ToxoDB#5 from China. This indicates that caracal plays an important role in the transmission of this T. gondii genotype.
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Affiliation(s)
- Hongjie Ren
- College of Animal Science, Henan Agricultural University, Zhengzhou 450000, China
| | - Gaohui Mao
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Yan Zhang
- College of Animal Science, Henan Agricultural University, Zhengzhou 450000, China
| | - Niuping Zhu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
| | - Qunchao Liang
- Henan Yinji Jiabao Amusement Park Management Co., Ltd., Zhengzhou 452300, China
| | - Yibao Jiang
- College of Animal Science, Henan Agricultural University, Zhengzhou 450000, China
| | - Yurong Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450000, China
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Castillo Almeida NE, Cichon CJ, Gomez CA. How I approach diarrhea in hematological transplant patients: A practical tool. Transpl Infect Dis 2023; 25 Suppl 1:e14184. [PMID: 37910586 DOI: 10.1111/tid.14184] [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: 09/08/2023] [Revised: 10/05/2023] [Accepted: 10/15/2023] [Indexed: 11/03/2023]
Abstract
Diarrhea in hematopoietic stem-cell transplantation (HSCT) remains a multifactorial challenge that demands a nuanced diagnostic approach. The causes of infectious diarrhea in HSCT recipients are diverse and influenced by patient-specific risk factors, the post-transplant timeline, and local epidemiology. During the past decade, our understanding of diarrhea in HSCT has witnessed a transformative shift through the incorporation of gastrointestinal (GI) multiplex polymerase chain reaction (PCR) panels. However, the judicious application of these panels is imperative to avoid overtesting and prevent adverse outcomes. The challenge lies in distinguishing between the diverse causes of diarrhea, ascertaining the clinical significance of detected pathogens, and navigating the diagnostic uncertainty presented by several non-infectious conditions such as mucositis, intestinal dysbiosis, and acute graft-versus-host disease (aGvHD), all of which mimic infection. This review examines the landscape of infectious diarrhea in the HSCT population, encompassing both established (e.g., Cytomegalovirus, Clostridioides difficile, and norovirus) and emerging pathogens (e.g., sapoviruses, astroviruses). We propose a multifaceted diagnostic algorithm that combines clinical assessment, risk stratification, and tailored utilization of molecular platforms. While multiplex GI panels present invaluable opportunities for rapid and comprehensive pathogen detection, their judicious use is pivotal in preserving diagnostic stewardship. Customization of diagnostic algorithms tailored to local epidemiology ensures optimal patient care and resource utilization.
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Affiliation(s)
- Natalia E Castillo Almeida
- Department of Internal Medicine, Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Catherine J Cichon
- Department of Internal Medicine, Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Carlos A Gomez
- Department of Internal Medicine, Division of Infectious Diseases, University of Nebraska Medical Center, Omaha, Nebraska, USA
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El-kady AM, S. Hassan A, Mohamed K, Alfaifi MS, Elshazly H, Alamri ZZ, Wakid MH, Gattan HS, Altwaim SA, Al-Megrin WAI, Younis S. Zinc oxide nanoparticles produced by Zingiber officinale ameliorates acute toxoplasmosis-induced pathological and biochemical alterations and reduced parasite burden in mice model. PLoS Negl Trop Dis 2023; 17:e0011447. [PMID: 37410712 PMCID: PMC10325114 DOI: 10.1371/journal.pntd.0011447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 06/07/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Although, approximately 30% of the world's population is estimated to be infected with Toxoplasma gondii (T. gondii) with serious manifestations in immunocompromised patients and pregnant females, the available treatment options for toxoplasmosis are limited with serious side effects. Therefore, it is of great importance to identify novel potent, well tolerated candidates for treatment of toxoplasmosis. The present study aimed to evaluate the effect of Zinc oxide nanoparticles (ZnO NPs) synthesized using Zingiber officinale against acute toxoplasmosis in experimentally infected mice. METHODS The ethanolic extract of ginger was used to prepare ZnO NPs. The produced ZnO NPs were characterized in terms of structure and morphology using Fourier Transformed Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), UV- spectroscopy and scanning electron microscopy (SEM). The prepared formula was used in treatment of T. gondii RH virulent strain. Forty animals were divided into four groups, with ten mice per group. The first group was the uninfected, control group. The second group was infected but untreated. The third and the fourth groups received ZnO NPs and Spiramycin orally in a dose of 10 mg/kg and 200 mg/kg/day respectively. The effect of the used formulas on the animals survival rate, parasite burden, liver enzymes -including Alanine transaminase (ALT) and aspartate transaminase (AST)-, nitric oxide (NO) and Catalase antioxidant enzyme (CAT) activity was measured. Moreover, the effect of treatment on histopathological alterations associated with toxoplasmosis was examined. RESULTS Mice treated with ZnO NPs showed the longest survival time with significant reduction in the parasite load in the livers and peritoneal fluids of the same group. Moreover, ZnO NPs treatment was associated with a significant reduction in the level of liver enzymes (ALT, AST) and NO and a significant increase in the antioxidant activity of CAT enzyme. SEM examination of tachyzoites from the peritoneal fluid showed marked distortion of T. gondii tachyzoites isolated from mice treated with ZnO NPs in comparison to untreated group. T. gondii induced histopathological alterations in the liver and brain were reversed by ZnO NPs treatment with restoration of normal tissue morphology. CONCLUSION The produced formula showed a good therapeutic potential in treatment of murine toxoplasmosis as demonstrated by prolonged survival rate, reduced parasite burden, improved T. gondii associated liver injury and histopathological alterations. Thus, we assume that the protective effect observed in the current research is attributed to the antioxidant capability of NPs. Based on the results obtained from the current work, we suggest greenly produced ZnO NPs as a chemotherapeutic agent with good therapeutic potential and high levels of safety in the treatment of toxoplasmosis.
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Affiliation(s)
- Asmaa M. El-kady
- Department of Medical Parasitology, Faculty of Medicine, South Valley University, Qena, Egypt
| | - Abeer S. Hassan
- Department of Pharmaceutics, Faculty of pharmacy, South Valley University, Qena, Egypt
| | - Khalil Mohamed
- Department of Epidemiology, Faculty of Public Health and Health Informatics, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Mashael S. Alfaifi
- Department of Epidemiology, Faculty of Public Health and Health Informatics, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Hayam Elshazly
- Department of Biology, Faculty of Sciences-Scientific Departments, Qassim University, Buraidah, Qassim, Saudi Arabia
- Department of Zoology, Faculty of Science, Beni-Suef University, Beni Suef, Egypt
| | - Zaenah Zuhair Alamri
- Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Majed H. Wakid
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hattan S. Gattan
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sarah A. Altwaim
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Wafa Abdullah I. Al-Megrin
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Salwa Younis
- Department of Medical Parasitology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
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Zhu S, VanWormer E, Martínez-López B, Bahia-Oliveira LMG, DaMatta RA, Rodrigues PS, Shapiro K. Quantitative Risk Assessment of Oocyst Versus Bradyzoite Foodborne Transmission of Toxoplasma gondii in Brazil. Pathogens 2023; 12:870. [PMID: 37513717 PMCID: PMC10384504 DOI: 10.3390/pathogens12070870] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/16/2023] [Accepted: 06/18/2023] [Indexed: 07/30/2023] Open
Abstract
Toxoplasma gondii is a globally distributed zoonotic protozoan parasite. Infection with T. gondii can cause congenital toxoplasmosis in developing fetuses and acute outbreaks in the general population, and the disease burden is especially high in South America. Prior studies found that the environmental stage of T. gondii, oocysts, is an important source of infection in Brazil; however, no studies have quantified this risk relative to other parasite stages. We developed a Bayesian quantitative risk assessment (QRA) to estimate the relative attribution of the two primary parasite stages (bradyzoite and oocyst) that can be transmitted in foods to people in Brazil. Oocyst contamination in fruits and greens contributed significantly more to overall estimated T. gondii infections than bradyzoite-contaminated foods (beef, pork, poultry). In sensitivity analysis, treatment, i.e., cooking temperature for meat and washing efficiency for produce, most strongly affected the estimated toxoplasmosis incidence rate. Due to the lack of regional food contamination prevalence data and the high level of uncertainty in many model parameters, this analysis provides an initial estimate of the relative importance of food products. Important knowledge gaps for oocyst-borne infections were identified and can drive future studies to improve risk assessments and effective policy actions to reduce human toxoplasmosis in Brazil.
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Affiliation(s)
- Sophie Zhu
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | - Elizabeth VanWormer
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE 68588, USA
- School of Natural Resources, University of Nebraska, Lincoln, NE 68588, USA
| | - Beatriz Martínez-López
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
| | | | - Renato Augusto DaMatta
- Laboratory of Cell and Tissue Biology, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro 28013-602, Brazil
| | - Pedro Souto Rodrigues
- Laboratory of Cell and Tissue Biology, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro 28013-602, Brazil
| | - Karen Shapiro
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
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Villa L, Allievi C, Gazzonis AL, Ventura G, Gradassi M, Zanzani SA, Manfredi MT. Serological Prevalence of Toxoplasma gondii, Neospora caninum, and Sarcoptes scabiei var. suis in Wild Boars ( Sus scrofa) Hunted in a Highly Anthropized Area in Italy. Animals (Basel) 2023; 13:1730. [PMID: 37889677 PMCID: PMC10251892 DOI: 10.3390/ani13111730] [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: 04/14/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 10/29/2023] Open
Abstract
Due to the increasing expansion into urban and rural areas, wild boars represent a potential source of infection with zoonotic and animal-specific parasites for both humans and animals. Therefore, the aim of this study was to investigate the serological prevalence to Toxoplasma gondii, Neospora caninum, and Sarcoptes scabiei var. suis in blood samples from wild boars (Sus scrofa) hunted in an anthropized area in Italy. Enzyme-linked immunosorbent assay (ELISA) tests were used to detect antibodies anti-T. gondii and anti-S. scabiei and an immunofluorescence antibody test (IFAT) for antibodies anti-N. caninum. 81 out of 128 wild boars (P = 63.3%) resulted positive for at least one of the three parasites. 68 of them were seropositive to T. gondii (P = 53.1%) and 14 to N. caninum (P = 10.9%). 9 wild boars resulted seropositive to S. scabiei var. suis (P = 7.0%). Sampling season was the only significant risk factor related to S. scabiei var. suis seroprevalence (OR = 7.8). The high occurrence of T. gondii supports the role of this species as a source of infection for other animals and humans. Furthermore, the serological prevalence of N. caninum and S. scabiei var. suis in wild boars from the study area characterized by the presence of numerous dairy cattle and pig farms is relevant to demonstrate its suitability for the circulation of these parasites both in domestic and wild species.
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Affiliation(s)
- Luca Villa
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (C.A.); (A.L.G.); (S.A.Z.)
| | - Carolina Allievi
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (C.A.); (A.L.G.); (S.A.Z.)
| | - Alessia Libera Gazzonis
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (C.A.); (A.L.G.); (S.A.Z.)
| | - Giordano Ventura
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, Via Cardinal Massaia 7, 26100 Cremona, Italy; (G.V.); (M.G.)
| | - Matteo Gradassi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, Via Cardinal Massaia 7, 26100 Cremona, Italy; (G.V.); (M.G.)
| | - Sergio Aurelio Zanzani
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (C.A.); (A.L.G.); (S.A.Z.)
| | - Maria Teresa Manfredi
- Department of Veterinary Medicine and Animal Sciences, Università degli Studi di Milano, Via dell’Università 6, 26900 Lodi, Italy; (C.A.); (A.L.G.); (S.A.Z.)
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Warmate D, Onarinde BA. Food safety incidents in the red meat industry: A review of foodborne disease outbreaks linked to the consumption of red meat and its products, 1991 to 2021. Int J Food Microbiol 2023; 398:110240. [PMID: 37167789 DOI: 10.1016/j.ijfoodmicro.2023.110240] [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: 07/23/2022] [Revised: 04/12/2023] [Accepted: 04/28/2023] [Indexed: 05/13/2023]
Abstract
Red meat is a significant source of human nutrition, and the red meat industry contributes to the economy of nations. Nonetheless, there is a widespread global concern about public health issues posed by severe food safety incidents within the red meat industry. Most of these incidents are associated with foodborne disease outbreaks that impact individual consumers, food businesses and society. This study adopts a systematic search and review approach to identify three decades of published investigation reports of global foodborne disease outbreaks linked with the consumption of red meat and products made from them. The review aims to evaluate the critical features of these outbreak incidents to get insight into their contributing factors and root causes. In particular, this review discusses the transmission setting (origin of pathogenic agents), the food vehicles mostly incriminated, the causative pathogens (bacteria, viruses, and parasites) causing the most illnesses, and the most commonly reported contributing factors to the outbreaks. This information can help researchers and food business operators (FBOs) inform future risk assessment studies and support risk management activities in developing risk-mitigating strategies for the industry. Findings from this study suggest that implementing food safety management strategies which include adequate control measures at all stages of the food chain, from farm to fork, is imperative in preventing outbreak incidents. Of equal importance is the need for enhanced and sustained public education about the risk of foodborne illnesses associated with meat and its products whilst discouraging the consumption of raw meat products, especially by high-risk groups.
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Affiliation(s)
- Dein Warmate
- National Centre for Food Manufacturing, University of Lincoln, Holbeach PE12 7PT, UK.
| | - Bukola A Onarinde
- National Centre for Food Manufacturing, University of Lincoln, Holbeach PE12 7PT, UK
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10
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Kuruca L, Belluco S, Vieira-Pinto M, Antic D, Blagojevic B. Current control options and a way towards risk-based control of Toxoplasma gondii in the meat chain. Food Control 2023. [DOI: 10.1016/j.foodcont.2022.109556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Milne GC, Webster JP, Walker M. Is the incidence of congenital toxoplasmosis declining? Trends Parasitol 2023; 39:26-37. [PMID: 36400672 DOI: 10.1016/j.pt.2022.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 11/17/2022]
Abstract
Prenatal infection with the protozoan parasite Toxoplasma gondii can cause congenital toxoplasmosis (CT), an often fatal or lifelong-disabling condition. Several studies of human populations have reported temporal decreases in seroprevalence, suggesting declining CT incidence. However, the consistency of this trend among diverse populations remains unclear, as does its implication for prenatal screening programmes, the major intervention against CT. Using temporally resolved data on the seroprevalence of T. gondii in various countries, we discuss how the parasite's changing epidemiology may affect trends in CT incidence in varying and counterintuitive ways. We argue that parasite stage-specific serology could be helpful for understanding underlying causes of secular changes in seroprevalence. Furthermore, we highlight the importance of updating cost-effectiveness estimates of screening programmes, accounting for neuropsychiatric sequelae.
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Affiliation(s)
- Gregory Colin Milne
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, Herts, AL9 7TA, UK; London Centre for Neglected Tropical Disease Research, Imperial College London Faculty of Medicine, London, UK.
| | - Joanne P Webster
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, Herts, AL9 7TA, UK; London Centre for Neglected Tropical Disease Research, Imperial College London Faculty of Medicine, London, UK
| | - Martin Walker
- Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, Herts, AL9 7TA, UK; London Centre for Neglected Tropical Disease Research, Imperial College London Faculty of Medicine, London, UK
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12
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Kohler JM, Mammo DA, Bennett SR, Davies JB. Primary ocular toxoplasmosis secondary to venison consumption. Am J Ophthalmol Case Rep 2022; 29:101776. [PMID: 36544752 PMCID: PMC9762148 DOI: 10.1016/j.ajoc.2022.101776] [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: 11/15/2021] [Revised: 11/04/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Purpose To describe primary ocular toxoplasmosis infection related to ingestion of undercooked venison. Observations This single site, retrospective case series reviewed 4 patients with primary ocular toxoplasmosis that was acquired by ingesting undercooked venison. De-identified data was collected regarding baseline patient characteristics including age, sex, past medical and ocular history, onset of symptoms, visual acuity (VA), response to treatment, and workup. All patients with acquired toxoplasmosis had similar chronology of systemic and ocular symptoms. Exposure occurred in October or November and systemic symptoms developed within 2 weeks, followed by ocular symptoms an average of 2.6 months later. Average age at onset was 56 ± 13 (age ± SD) years old and all were male. Average initial and final VA were 20/50 and 20/50, respectively. Positive anti-toxoplasma IgM and IgG serologies were found in all cases. All patients were treated with trimethoprim/sulfamethoxazole and achieved rapid improvement. Complications occurred in 50% of cases and included epiretinal membrane, cystoid macular edema, vitreoretinal traction, and neovascularization. Conclusions and importance Consumption of undercooked venison is a source of primary ocular toxoplasmosis even in immunocompetent hosts and has a clear chronology. A presentation of retinochoroiditis during the winter months should prompt questioning for exposure to wild game.
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Affiliation(s)
- James M. Kohler
- University of Utah Department of Ophthalmology & Visual Sciences, Salt Lake City, USA
| | | | | | - John B. Davies
- Retina Consultants of Minnesota, Minneapolis, USA,Corresponding author. Retina Consultants of Minnesota, 3601 W 76th St, Suite 300, Edina, MN, 55435, USA.
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13
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A unique Toxoplasma gondii haplotype accompanied the global expansion of cats. Nat Commun 2022; 13:5778. [PMID: 36182919 PMCID: PMC9526699 DOI: 10.1038/s41467-022-33556-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 09/22/2022] [Indexed: 11/08/2022] Open
Abstract
Toxoplasma gondii is a cyst-forming apicomplexan parasite of virtually all warm-blooded species, with all true cats (Felidae) as definitive hosts. It is the etiologic agent of toxoplasmosis, a disease causing substantial public health burden worldwide. Few intercontinental clonal lineages represent the large majority of isolates worldwide. Little is known about the evolutionary forces driving the success of these lineages, the timing and the mechanisms of their global dispersal. In this study, we analyse a set of 156 genomes and we provide estimates of T. gondii mutation rate and generation time. We elucidate how the evolution of T. gondii populations is intimately linked to the major events that have punctuated the recent history of cats. We show that a unique haplotype, whose length represents only 0.16% of the whole T. gondii genome, is common to all intercontinental lineages and hybrid populations derived from these lineages. This haplotype has accompanied wildcats (Felis silvestris) during their emergence from the wild to domestic settlements, their dispersal in the Old World, and their expansion in the last five centuries to the Americas. The selection of this haplotype is most parsimoniously explained by its role in sexual reproduction of T. gondii in domestic cats.
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14
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McCall J, Rothfeldt L, Giesbrecht K, Hunt A, Bauck L, Scheftel J, Birn R, Buss B, Schroeder B, Haupt TE, Klos R, Straily A. Public Health Surveillance and Reporting for Human Toxoplasmosis — Six States, 2021. MMWR. MORBIDITY AND MORTALITY WEEKLY REPORT 2022; 71:889-893. [PMID: 35834417 PMCID: PMC9290386 DOI: 10.15585/mmwr.mm7128a1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Bolais PF, Galal L, Cronemberger C, Pereira FDA, Barbosa ADS, Dib LV, Amendoeira MRR, Dardé ML, Mercier A. Toxoplasma gondii in the faeces of wild felids from the Atlantic Forest, Brazil. Mem Inst Oswaldo Cruz 2022; 117:e210302. [PMID: 35766781 PMCID: PMC9241165 DOI: 10.1590/0074-02760210302] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 03/28/2022] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Toxoplasma gondii is a apicomplexan parasite of virtually all warm-blooded species. All true cats (Felidae) can act as definitive hosts for this parasite by shedding resistant oocysts into the environment. However, the patterns of oocysts shedding are only partially understood in domestic cats and largely unknown in wild felids. OBJECTIVES We carried out molecular analysis of 82 faecal samples from wild felids collected in the Serra dos Órgãos National Park (Parnaso), Rio de Janeiro, Brazil. METHODS We screened samples for T. gondii DNA using a quantitative polymerase chain reaction (qPCR) targeting the 529bp DNA fragment. Polymerase chain reaction (PCR)-positive samples were genotyped using 15 microsatellite markers. RESULTS Only one faecal sample from a Puma yagouaroundi was PCR-positive [cycle threshold (Ct) = 26.88]. This sample was contaminated by a T. gondii strain of BrIII lineage, a common lineage in domestic animals from Brazil. MAIN CONCLUSIONS This first report of T. gondii in faeces of wild South American felids in their natural environment indicates infrequent oocyst shedding and suggests a role of acquired immunity in limiting re-excretion as in domestic cats. The presence of a domestic strain of T. gondii in a faecal sample from a wild felid at very low concentrations (not detected by microscopy) is consistent with the hypothesis of host-parasite co-adaptations limiting the circulation of T. gondii strains between domestic and wild environments.
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Affiliation(s)
- Paula F Bolais
- University of Limoges, Institute of Epidemiology and Tropical Neurology, Epidemiology of Chronic Diseases in Tropical Zone, OmegaHealth, Limoges, France
| | - Lokman Galal
- University of Limoges, Institute of Epidemiology and Tropical Neurology, Epidemiology of Chronic Diseases in Tropical Zone, OmegaHealth, Limoges, France
| | - Cecília Cronemberger
- Instituto Chico Mendes de Conservação da Biodiversidade, Parque Nacional da Serra dos Órgãos, Teresópolis, RJ, Brasil
| | - Fabiane de Aguiar Pereira
- Instituto Chico Mendes de Conservação da Biodiversidade, Parque Nacional da Serra dos Órgãos, Teresópolis, RJ, Brasil
| | - Alynne da Silva Barbosa
- Universidade Federal Fluminense, Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Niterói, RJ, Brasil.,Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Toxoplasmose e Outras Protozooses, Rio de Janeiro, RJ, Brasil
| | - Laís Verdan Dib
- Universidade Federal Fluminense, Instituto Biomédico, Departamento de Microbiologia e Parasitologia, Niterói, RJ, Brasil.,Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Toxoplasmose e Outras Protozooses, Rio de Janeiro, RJ, Brasil
| | - Maria Regina Reis Amendoeira
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Toxoplasmose e Outras Protozooses, Rio de Janeiro, RJ, Brasil
| | - Marie-Laure Dardé
- University of Limoges, Institute of Epidemiology and Tropical Neurology, Epidemiology of Chronic Diseases in Tropical Zone, OmegaHealth, Limoges, France.,Centre Hospitalier-Universitaire Dupuytren, Centre National de Référence, Toxoplasmose/Toxoplasma Biological Centre, Limoges, France
| | - Aurélien Mercier
- University of Limoges, Institute of Epidemiology and Tropical Neurology, Epidemiology of Chronic Diseases in Tropical Zone, OmegaHealth, Limoges, France.,Centre Hospitalier-Universitaire Dupuytren, Centre National de Référence, Toxoplasmose/Toxoplasma Biological Centre, Limoges, France
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16
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Loop mediated isothermal amplification for detection of foodborne parasites: A journey from lab to lab-on-a-chip. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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The Association of Toxoplasma gondii IgG and Liver Injury in US Adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19127515. [PMID: 35742764 PMCID: PMC9223808 DOI: 10.3390/ijerph19127515] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/17/2022] [Accepted: 06/17/2022] [Indexed: 11/21/2022]
Abstract
Background: Toxoplasma gondii (T. gondii) is a ubiquitous obligatory intracellular parasite which infects over 40 million Americans and causes toxoplasmosis. Inside the human body, T. gondii can damage tissues and invade vital organs. Methods: This study evaluated the association of T. gondii infection and liver disease using data from the National Health and Nutrition Examination Survey (NHANES) 2009–2010, with a sample size of 3371 participants (age 20–80 years). Toxoplasma infection was determined by the level of T. gondii IgG antibody in serum samples. Liver disease was assessed by liver injury biomarkers and the Fatty Liver Index (US-FLI). The evaluation of the association between T. gondii infection and liver disease included the calculation of the Mantel–Haenszel risk ratio (RRMH), Rho-Scott chi-square bivariate analyses, design-based t-tests, and linear and logistic regression models which were adjusted for demographic and anthropometric covariates. Results: Mean levels of aspartate aminotransferase (AST) and alkaline phosphatase (ALP) were significantly more elevated in the T. gondii IgG-positive (IgG+) participants as compared to T. gondii-negative (IgG−) participants, p = 0.0435 and 0.0310, respectively. In linear regression analysis, exposure to T. gondii IgG+ had statistically significant positive associations with AST (p = 0.0211), alanine aminotransferase (ALT) (p = 0.0221), and gamma-glutamyl transferase (GGT) (p = 0.0258) after adjusting for BMI, age, gender, and race. T. gondii exposure was associated with an elevated relative risk of chronic liver disease (CLD) (RRMH = 1.26, 95% CI: 1.05–1.51). This association was more pronounced in certain occupations, such as construction, agriculture, forestry, and fishing, where Toxoplasma infection is more common (p = 0.0477). Moreover, Toxoplasma infection increased the odds of nonalcoholic fatty liver disease (NAFLD) (OR = 6.99, 95% CI = 1.85–26.32, p = 0.0237). Conclusion: T. gondii IgG+ antibody was significantly associated with liver injury biomarkers (ALT, AST, GGT, and ALP) and an increased risk of CLD and NAFLD. Moreover, the association of Toxoplasma with CLD was more evident in specific occupations where the prevalence of Toxoplasma was high. The findings of this study provide insight into utilizing liver biomarkers and US-FLI to assess the health complications of Toxoplasma when imaging tests are not accessible.
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Ardura MI, Montoya JG, Dyner L, Contopoulos-Ioannidis DG. Multisystem Inflammatory Syndrome in Adults and Severe Toxoplasmosis: Similar Clinical Presentations, Potentially Severe Outcomes. Open Forum Infect Dis 2022; 9:ofac198. [PMID: 35794941 PMCID: PMC9251652 DOI: 10.1093/ofid/ofac198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Indexed: 11/14/2022] Open
Abstract
Abstract
We report a case of a 21-year-old previously healthy male who developed severe toxoplasmosis with chorioretinitis and myositis two months after receiving corticosteroids for presumed multisystem inflammatory syndrome of adults (MIS-A), in the setting of a recently acquired acute Toxoplasma infection, likely acquired during a trip to Latin America.
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Affiliation(s)
- Monica I. Ardura
- Department of Pediatrics, Division of Infectious Diseases & Host Defense Program, Nationwide Children’s Hospital and The Ohio State University, Columbus, Ohio, USA
| | - Jose G. Montoya
- Dr. Jack S. Remington Laboratory for Specialty Diagnostics, National Reference Center for the Study and Diagnosis of Toxoplasmosis Palo Alto Medical Foundation, Palo Alto, California, USA
| | - LauraLe Dyner
- Department of Medical Affairs, Karius Inc, Redwood City, California, USA
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19
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A Review on Alaria alata, Toxoplasma gondii and Sarcocystis spp. in Mammalian Game Meat Consumed in Europe: Epidemiology, Risk Management and Future Directions. Animals (Basel) 2022; 12:ani12030263. [PMID: 35158587 PMCID: PMC8833328 DOI: 10.3390/ani12030263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/24/2022] Open
Abstract
Simple Summary In many European countries, game meat consumption is related to the traditional hunting culture. Its demand and consumption are increasing, also due to the growing populations of wild ungulates. However, specific public health issues exist and should be taken into account. This review focuses on the causal agents, epidemiology, potential risk for human health and its management along the supply chain, including parasite detection at slaughtering and inactivation in meat, of three parasites (Alaria alata, Toxoplasma gondii and Sarcocystis spp.), which can be transmitted by the main mammalian game meat species in the EU: wild boar (Sus scrofa), red deer (Cervus elaphus), roe deer (Capreolus capreolus), fallow deer (Dama dama), Alpine chamois (Rupicapra rupicapra), moose (Alces alces), hare (Lepus europaeus) and wild rabbit (Oryctolagus cuniculus). By presenting the main issues and knowledge gaps, this study aims to contribute to an improved control supporting the risk analysis process. Abstract Game meat is increasingly appreciated and consumed in Europe, also due to the growing population of wild ungulates. In addition to interesting nutritional properties and market opportunities, game meat is characterized by some specific public health issues. This review focuses on the etiology, epidemiology, public health aspects and risk management along the supply chain, including parasite detection at slaughtering and inactivation in meat, of three selected foodborne parasitic hazards (Alaria alata, Toxoplasma gondii and Sarcocystis spp.) in the main mammalian game meat species in the EU: wild boar (Sus scrofa), red deer (Cervus elaphus), roe deer (Capreolus capreolus), fallow deer (Dama dama), Alpine chamois (Rupicapra rupicapra), moose (Alces alces), hare (Lepus europaeus) and wild rabbit (Oryctolagus cuniculus). The presented data point out the main issues, and knowledge gaps as well as the potential for improved control in order to contribute to the risk analysis process. To pursue an effective management of these parasitic zoonoses, awareness raising should involve all figures in the supply chain, including hunters, restaurateurs and consumers. Human behaviour and the lack of knowledge regarding meat borne parasitic zoonoses and the health risks they pose seem to be the most important factors responsible for human infections. However, detection methods, starting from the sampling procedure, should be further developed and standardized in order to improve the collection of accurate and up-to-date epidemiological data.
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Uzelac A, Klun I, Ćirković V, Bauman N, Bobić B, Štajner T, Srbljanović J, Lijeskić O, Djurković-Djaković O. Toxoplasma gondii Genotypes Circulating in Serbia-Insight into the Population Structure and Diversity of the Species in Southeastern Europe, a Region of Intercontinental Strain Exchange. Microorganisms 2021; 9:microorganisms9122526. [PMID: 34946128 PMCID: PMC8708754 DOI: 10.3390/microorganisms9122526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/24/2021] [Accepted: 12/01/2021] [Indexed: 01/08/2023] Open
Abstract
In Europe, Toxoplasma gondii lineage II is dominant, and ToxoDB#1 the most frequently occurring genotype. The abundance of lineage III genotypes varies geographically and lineage I are rare, yet present in several regions of the continent. Data on the T. gondii population structure in southeastern Europe (SEE) are scarce, yet necessary to appreciate the diversity of the species in Europe. To help fill this gap, we genotyped 67 strains from nine species of intermediate hosts in Serbia by MnPCR-RFLP, determined the population structure, and identified the genotypes using ToxoDB. A neighbor-joining tree was also constructed from the isolates genotyped on nine loci. While 42% of the total genotype population consisted of ToxoDB#1 and ToxoDB#2, variant genotypes of both lineages comprised 46% of the population in wildlife and 28% in domestic animals and humans. One genotype of Africa 4 lineage was detected in a human sample. Interestingly, the findings include one lineage III variant and one II/III recombinant isolate with intercontinental distribution, which appear to be moderately related to South American genotypes. Based on these findings, SEE is a region of underappreciated T. gondii genetic diversity and possible strain exchange between Europe and Africa.
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21
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Borkens Y. Toxoplasma gondii in Australian macropods ( Macropodidae) and its implication to meat consumption. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2021; 16:153-162. [PMID: 34567970 PMCID: PMC8449172 DOI: 10.1016/j.ijppaw.2021.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 08/13/2021] [Accepted: 09/08/2021] [Indexed: 11/19/2022]
Abstract
Toxoplasma gondii is a worldwide occurring apicomplexan parasite. Due to its high seroprevalence in livestock as well as in game animals, T. gondii is an important food-borne pathogen and can have significant health implications for humans as well as for pets. This article describes the prevalence of T. gondii in free-ranging macropods hunted for consumption. All hunted macropod species (commercial as well as non-commercial hunt) show a positive seroprevalence for T. gondii. This seroprevalence is influenced by various factors, such as sex or habitat. Furthermore, the parasite shows a high level of genetic variability in macropods. Genetically variable strains have already caused outbreaks of toxoplasmosis in the past (Canada and the US). These were attributed to undercooked game meat like venison. Despite this risk, neither Australia nor New Zealand currently have food safety checks against foodborne pathogens. These conditions scan pose a significant health risk to the population. Especially, since cases of toxoplasmosis have already been successfully traced back to insufficiently cooked kangaroo meat in the past. The kangaroo hunt is an important industry in Australia. 7 species of kangaroos and wallabies are hunted for commercial purpose (for human and pet consumption). Food security checks against foodborne pathogens (including T. gondii) are not a requirement of the Australia New Zealand Food Standard Code. The databases Medline, Web of Science, SCOPUS and Informit were used. 6 scientific publications were reviewed in this publication.
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22
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Stollberg KC, Schares G, Mayer-Scholl A, Hrushetska I, Diescher S, Johne A, Richter MH, Bier NS. Comparison of Direct and Indirect Toxoplasma gondii Detection and Genotyping in Game: Relationship and Challenges. Microorganisms 2021; 9:microorganisms9081663. [PMID: 34442742 PMCID: PMC8399173 DOI: 10.3390/microorganisms9081663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/28/2021] [Accepted: 07/31/2021] [Indexed: 11/21/2022] Open
Abstract
The importance of game as a source of Toxoplasma gondii (T. gondii) infection in humans is largely unknown. New data on the presence of T. gondii in game hunted in the Federal State of Brandenburg, Germany, were obtained by direct and indirect detection (ELISA). DNA extracted either directly (5 g heart or foreleg muscle, DE) or after acid pepsin digestion (50 g heart, PD) or enriched by magnetic capture (50 g heart, MC) was examined by real-time PCR (qPCR). ELISA revealed seroprevalences of 20% in wild boar (Sus scrofa), 11% in roe deer (Capreolus capreolus) and 6% in red deer (Cervus elaphus). T. gondii DNA was detected by at least one direct detection method in 12% of wild boar, 6% of roe deer, 2% of fallow deer (Dama dama) and 2% of red deer. In both, positive wild boar and roe deer, T. gondii type II specific alleles were the most prevalent, as assessed by PCR-restriction fragment length polymorphism. The highest proportion of positive animals was detected by MC qPCR, followed by PD qPCR with a similar proportion of positive findings. Investigation of 50 g of heart muscle revealed a significantly higher proportion of positive qPCR results than analysis of 5 g (p = 0.048). An association between seropositivity and direct detection was evident in wild boar and roe deer (p < 0.001). Infectivity of T. gondii DNA–positive samples was confirmed by bioassay (4/4), providing evidence that game could represent a relevant source of viable T. gondii posing a risk for human infection.
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Affiliation(s)
- Kaya C. Stollberg
- German Federal Institute for Risk Assessment (BfR), Department for Safety in the Food Chain, 10589 Berlin, Germany;
| | - Gereon Schares
- National Reference Laboratory for Toxoplasmosis, Institute of Epidemiology, Friedrich-Loeffler-Institut (FLI), Federal Research Institute for Animal Health, 17493 Greifswald, Insel Riems, Germany;
| | - Anne Mayer-Scholl
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
| | - Iryna Hrushetska
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
| | - Susanne Diescher
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
| | - Annette Johne
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
| | - Martin H. Richter
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
| | - Nadja S. Bier
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, 12277 Berlin, Germany; (A.M.-S.); (I.H.); (S.D.); (A.J.); (M.H.R.)
- Correspondence:
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Castro-Scholten S, Cano-Terriza D, Jiménez-Ruiz S, Almería S, Risalde MA, Vicente J, Acevedo P, Arnal MC, Balseiro A, Gómez-Guillamón F, Escribano F, Puig-Ribas M, Dubey JP, García-Bocanegra I. Seroepidemiology of Toxoplasma gondii in wild ruminants in Spain. Zoonoses Public Health 2021; 68:884-895. [PMID: 34227234 DOI: 10.1111/zph.12878] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/21/2021] [Accepted: 06/25/2021] [Indexed: 10/20/2022]
Abstract
Toxoplasmosis is a parasitic zoonosis caused by Toxoplasma gondii which infects warm-blooded species worldwide. Humans can be infected through ingestion of tissue cysts from raw or undercooked meat, including game meat. A nationwide large-scale cross-sectional study was conducted to assess exposure to T. gondii in seven wild ruminant species in Spain. A total of 2,040 serum samples from 77 sampling sites randomly distributed in the five bioregions (BRs) covering mainland Spain were tested for antibodies against T. gondii using the modified agglutination test. The overall seroprevalence was 22.0% (449/2,040). Seroprevalence by species in decreasing order was as follows: 39.6% (141/356) in roe deer (Capreolus capreolus), 37.1% (138/372) in fallow deer (Dama dama), 16.6% (92/553) in red deer (Cervus elaphus), 14.0% (26/186) in Southern chamois (Rupicapra pyrenaica), 11.5% (24/209) in mouflon (Ovis aries musimon), 7.8% (27/346) in Iberian wild goat (Capra pyrenaica) and 5.6% (1/18) in Barbary sheep (Ammotragus lervia). Seropositivity was detected in 74.0% (57/77) of the sampling sites. Results indicate widespread but not homogeneous exposure to T. gondii in wild ruminant populations in Spain during the last two decades and highlight differences related to animal species and spatial distribution of these species in this country; this implies potential consequences of T. gondii for animal health, conservation and public health.
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Affiliation(s)
- Sabrina Castro-Scholten
- Departamento de Sanidad Animal, Facultad de Veterinaria, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), Universidad de Córdoba (UCO), Córdoba, Spain
| | - David Cano-Terriza
- Departamento de Sanidad Animal, Facultad de Veterinaria, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), Universidad de Córdoba (UCO), Córdoba, Spain
| | - Saúl Jiménez-Ruiz
- Departamento de Sanidad Animal, Facultad de Veterinaria, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), Universidad de Córdoba (UCO), Córdoba, Spain.,Grupo Sanidad y Biotecnología (SaBio), Instituto de Investigación en Recursos Cinegéticos IREC (UCLM-CSIC-JCCM), Ciudad Real, Spain
| | - Sonia Almería
- Food and Drug Administration, Center for Food Safety and Applied Nutrition (CFSAN), Office of Applied Research and Safety Assessment (OARSA), Laurel, MD, USA
| | - María A Risalde
- Departamento de Anatomía y Anatomía Patológica Comparadas y Toxicología, Facultad de Veterinaria, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), Universidad de Córdoba (UCO), Córdoba, Spain.,Unidad de Enfermedades Infecciosas, Grupo de Virología Clínica y Zoonosis, Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Joaquín Vicente
- Grupo Sanidad y Biotecnología (SaBio), Instituto de Investigación en Recursos Cinegéticos IREC (UCLM-CSIC-JCCM), Ciudad Real, Spain
| | - Pelayo Acevedo
- Grupo Sanidad y Biotecnología (SaBio), Instituto de Investigación en Recursos Cinegéticos IREC (UCLM-CSIC-JCCM), Ciudad Real, Spain
| | - María C Arnal
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza (UNIZAR), Zaragoza, Spain
| | - Ana Balseiro
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León (ULE), León, Spain.,Departamento de Sanidad Animal, Instituto de Ganadería de Montaña (CSIC-Universidad de León), León, Spain
| | - Félix Gómez-Guillamón
- Programa de Vigilancia Epidemiológica de la Fauna Silvestre, Consejería de Agricultura, Ganadería, Pesca y Desarrollo Sostenible (CAGPDS), Málaga, Spain
| | - Fernando Escribano
- Programa de Conservación y Recuperación de Fauna Silvestre, Dirección General de Medio Natural, Consejería de Agua, Agricultura, Pesca y Medio Ambiente, Murcia, Spain
| | - María Puig-Ribas
- Departament de Medicina i Cirurgia Animals, Wildlife Conservation Medicine Research Group (WildCoM), Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Jitender P Dubey
- Animal Parasitic Disease Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD, USA
| | - Ignacio García-Bocanegra
- Departamento de Sanidad Animal, Facultad de Veterinaria, Grupo de Investigación en Sanidad Animal y Zoonosis (GISAZ), Universidad de Córdoba (UCO), Córdoba, Spain
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24
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Dubey JP, Murata FHA, Cerqueira-Cézar CK, Kwok OCH. Epidemiologic and Public Health Significance of Toxoplasma gondii Infections in Venison: 2009-2020. J Parasitol 2021; 107:309-319. [PMID: 33886960 DOI: 10.1645/20-162] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Toxoplasma gondii infections are common in humans and animals worldwide. The ingestion of food or water contaminated with oocysts excreted by infected cats or ingestion of uncooked or undercooked meat containing tissue cysts of T. gondii are the 2 major modes of transmission of T. gondii. Deer are a popular game. Recently, outbreaks of clinical toxoplasmosis were reported in humans in North America linked to ingestion of undercooked venison. Here, we review prevalence, persistence of infection, clinical disease, epidemiology, and public health risks of T. gondii infections in deer and other cervids for the past decade. Estimates of worldwide serological prevalence are summarized individually for each species of deer, elk, moose, and caribou. Genetic diversity of 112 viable isolates of T. gondii from cervids is discussed, including its public health significance. Prevalence of T. gondii in deer is very high. Any part of a deer, including liver, spleen, and muscles, should be cooked thoroughly before human consumption.
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Affiliation(s)
- J P Dubey
- United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705-2350
| | - F H A Murata
- United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705-2350
| | - C K Cerqueira-Cézar
- United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705-2350
| | - O C H Kwok
- United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, Maryland 20705-2350
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25
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Dubey JP. Outbreaks of clinical toxoplasmosis in humans: five decades of personal experience, perspectives and lessons learned. Parasit Vectors 2021; 14:263. [PMID: 34011387 PMCID: PMC8136135 DOI: 10.1186/s13071-021-04769-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022] Open
Abstract
Background The protozoan parasite Toxoplasma gondii has a worldwide distribution and a very wide host range, infecting most warm-blooded hosts. Approximately 30% of humanity is infected with T. gondii, but clinical toxoplasmosis is relatively infrequent. Toxoplasmosis has a wide range of clinical symptoms involving almost all organ systems. In most persons that acquire infection postnatally, symptoms (when present) are mild and mimic other diseases such as flu, Lyme disease, Q fever, hematological alterations, or mumps. It is likely that clinical disease is more common than reported. The ingestion of infected meat or food and water contaminated with oocysts are the two main modes of postnatal transmission of Toxoplasma gondii. The infective dose and the incubation period of T. gondii infection are unknown because there are no human volunteer experiments. Methods Here, I have critically reviewed outbreaks of clinical toxoplasmosis in humans for the past 55 years, 1966–2020. Information from oocyst-acquired versus meat-acquired infections was assessed separately. Results Most outbreaks were from Brazil. There were no apparent differences in types or severity of symptoms in meat- versus oocyst-acquired infections. Fever, cervical lymphadenopathy, myalgia, and fatigue were the most important symptoms, and these symptoms were not age-dependent. The incubation period was 7–30 days. A genetic predisposition to cause eye disease is suspected in the parasites responsible for three outbreaks (in Brazil, Canada, and India). Only a few T. gondii tissue cysts might suffice to cause infection, as indicated by outbreaks affecting some (but not all) individuals sharing a meal of infected meat. Conclusions Whether the high frequency of outbreaks of toxoplasmosis in humans in Brazil is related to environmental contamination, poor hygiene, socioeconomic conditions, or to genotypes of T. gondii needs investigation. Graphic Abstract ![]()
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Affiliation(s)
- Jitender P Dubey
- United States Department of Agriculture, Agricultural Research Service, Animal Parasitic Diseases Laboratory, Beltsville Agricultural Research Center, Building 1001, Beltsville, MD, 20705-2350, USA.
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26
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Westling K. Deer Hunters: Beware of Toxoplasmosis! Clin Infect Dis 2021; 72:1566-1567. [PMID: 32412061 PMCID: PMC8096274 DOI: 10.1093/cid/ciaa288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 03/20/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Katarina Westling
- Department of Medicine, Division of Infectious Diseases and Dermatology, Karolinska Institutet, Stockholm, Sweden.,Department of Infectious Diseases, Karolinska University Hospital, Stockholm, Sweden
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27
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Almería S, Cano-Terriza D, Prieto P, Dubey JP, Jiménez-Martín D, Castro-Scholten S, Paniagua J, García-Bocanegra I. Seroprevalence and risk factors of Toxoplasma gondii infection in wild ungulates that cohabit in a natural park with human-animal interaction in the Mediterranean ecosystem. Zoonoses Public Health 2021; 68:263-270. [PMID: 33619865 DOI: 10.1111/zph.12821] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 01/31/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022]
Abstract
The possibility of Toxoplasma gondii transmitted from game meat to humans is of public health concern. Here we determined seroprevalence and risk factors associated with T. gondii in large game ungulates that cohabit in Sierras de Cazorla, Segura and Las Villas Natural Park (SCSV-NP) (Southern Spain), a natural park with high human-animal interaction. Antibodies against T. gondii in 328 wild ungulates were assayed by the modified agglutination test (MAT ≥ 1:25). Antibodies were found in 39 (11.9%, 95% CI: 8.4-15.4) wild ungulates, with seroprevalence levels of 20.8% in wild boars (Sus scrofa) (5/24), 19.0% in fallow deer (Dama dama) (12/63), 13.9% in Iberian ibex (Capra pyrenaica hispanica) (14/101), 7.9% in red deer (Cervus elaphus) (6/76), and 3.1% in mouflons (Ovis aries musimon) (2/64). Significantly higher seroprevalence was observed in fallow deer and wild boars compared to mouflons. Animals living close to urban areas (<2 km) had 4.6-times higher risk compared to those living at >5 km of urban areas. The results indicate high circulation of T. gondii in wild ungulates in SCSV-NP, which is of animal and public health concern. The increased seroprevalence of T. gondii detected in wildlife ungulates living close to urban areas may increase human infection in those areas if meat from infected animals is consumed raw or undercooked.
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Affiliation(s)
- Sonia Almería
- Division of Virulence Assessment, Department of Health and Human Services, Food and Drug Administration, Center for Food Safety and Nutrition (CFSAN), Office of Applied Research and Safety Assessment (OARSA), Laurel, MD, USA
| | - David Cano-Terriza
- Animal Health and Zoonosis Research Group (GISAZ), Department of Animal Health, University of Cordoba, Cordoba, Spain
| | - Paloma Prieto
- Sierras de Cazorla, Segura and Las Villas Natural Park, Junta de Andalucía, Cazorla (Jaén), Spain
| | - Jitender P Dubey
- Animal Parasitic Disease Laboratory, United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD, USA
| | - Débora Jiménez-Martín
- Animal Health and Zoonosis Research Group (GISAZ), Department of Animal Health, University of Cordoba, Cordoba, Spain
| | - Sabrina Castro-Scholten
- Animal Health and Zoonosis Research Group (GISAZ), Department of Animal Health, University of Cordoba, Cordoba, Spain
| | - Jorge Paniagua
- Animal Health and Zoonosis Research Group (GISAZ), Department of Animal Health, University of Cordoba, Cordoba, Spain
| | - Ignacio García-Bocanegra
- Animal Health and Zoonosis Research Group (GISAZ), Department of Animal Health, University of Cordoba, Cordoba, Spain
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28
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Arranz-Solís D, Carvalheiro CG, Zhang ER, Grigg ME, Saeij JPJ. Toxoplasma GRA Peptide-Specific Serologic Fingerprints Discriminate Among Major Strains Causing Toxoplasmosis. Front Cell Infect Microbiol 2021; 11:621738. [PMID: 33680990 PMCID: PMC7935526 DOI: 10.3389/fcimb.2021.621738] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/05/2021] [Indexed: 11/13/2022] Open
Abstract
The severity of toxoplasmosis depends on a combination of host and parasite factors. Among them, the Toxoplasma strain causing the infection is an important determinant of the disease outcome. Type 2 strains dominate in Europe, whereas in North America type 2, followed by type 3 and 12 strains are commonly isolated from wildlife and patients. To identify the strain type a person is infected with, serological typing provides a promising alternative to the often risky and not always possible biopsy-based DNA methods of genotyping. However, despite recent advances in serotyping, improvements in the sensitivity and specificity are still needed, and it does not yet discriminate among the major Toxoplasma lineages infecting people. Moreover, since infections caused by non-1/2/3 strains have been associated with more severe disease, the ability to identify these is critical. In the present study we investigated the diagnostic potential of an ELISA-based assay using 28 immunogenic Toxoplasma peptides derived from a recent large-scale peptide array screen. Our results show that a discrete number of peptides, derived from Toxoplasma dense granule proteins (GRA3, GRA5, GRA6, and GRA7) was sufficient to discriminate among archetypal strains that infect mice and humans. The assay specifically relies on ratios that compare individual serum reactivities against GRA-specific polymorphic peptide variants in order to determine a "reactivity fingerprint" for each of the major strains. Importantly, nonarchetypal strains that possess a unique combination of alleles, different from types 1/2/3, showed either a non-reactive, or different combinatorial, mixed serum reactivity signature that was diagnostic in its own right, and that can be used to identify these strains. Of note, we identified a distinct "HG11/12" reactivity pattern using the GRA6 peptides that is able to distinguish HG11/12 from archetypal North American/European strain infections.
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Affiliation(s)
- David Arranz-Solís
- Pathology, Microbiology and Immunology Department, Veterinary Medicine School 3A, University of California Davis, Davis, CA, United States
| | - Cristina G. Carvalheiro
- Laboratory of Parasitic Diseases, Molecular Parasitology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States,Department of Pediatrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Elizabeth R. Zhang
- Laboratory of Parasitic Diseases, Molecular Parasitology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Michael E. Grigg
- Laboratory of Parasitic Diseases, Molecular Parasitology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Jeroen P. J. Saeij
- Pathology, Microbiology and Immunology Department, Veterinary Medicine School 3A, University of California Davis, Davis, CA, United States,*Correspondence: Jeroen P. J. Saeij,
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29
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Conrady CD, Besirli CG, Baumal CR, Kovach JL, Etzel JD, Tsui JC, Elner SG, Johnson MW. Ocular Toxoplasmosis after Exposure to Wild Game. Ocul Immunol Inflamm 2021; 30:527-532. [PMID: 33560166 DOI: 10.1080/09273948.2020.1854316] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Purpose: To describe eight patients with toxoplasma retinochoroiditis following exposure to wild game.Methods: Retrospective, multicenter case seriesResults: Eight men, aged 29 to 71 (mean, 56 years), developed toxoplasmic retinochoroiditis after hunting and/or consuming wild game in the United States, including seven deer and one bear. Five patients developed the disease after eating undercooked game meat, while three developed ocular findings after cleaning hunted animals. Seven patients were healthy prior to exposure. LogMAR visual acuity at presentation was 0.697 ± 0.745, improving to 0.256 ± 0.335 by last follow-up. Disease complications developed in five (62.5%) patients, of which recurrence of retinochoroiditis was the most common.Conclusions: Contact with wild game is a potential source of primary ocular toxoplasmosis in immunocompetent adults. Hunters and consumers of rare game are at risk of serious ocular disease and appropriate contact precautions and cooking may reduce this complication.
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Affiliation(s)
- Christopher D Conrady
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - Cagri G Besirli
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - Caroline R Baumal
- New England Eye Center, Department of Ophthalmology, Tufts University, Boston, Massachusetts, USA
| | - Jaclyn L Kovach
- Department of Ophthalmology and Visual Sciences, University of Miami, Miami, Florida, USA
| | - Justin D Etzel
- Department of Ophthalmology and Visual Sciences, Geisinger Medical Center, Danville, Pennsylvania, USA
| | - Jonathan C Tsui
- Department of Ophthalmology and Visual Sciences, Geisinger Medical Center, Danville, Pennsylvania, USA
| | - Susan G Elner
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
| | - Mark W Johnson
- Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, Michigan, USA
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30
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Costa DF, Madeira RP, Torrecilhas AC, Nascimento H, Ribeiro KS, Paraboni MLR, Rizzo LV, Silveira C, Burnier MN, Lowen MS, Garcia JL, Gava R, Pereira-Chioccola VL, Commodaro AG, Belfort R. Ocular Disease in Mice Inoculated with Pork Heart Samples Infected with Toxoplasma gondii. Ocul Immunol Inflamm 2020; 30:463-469. [PMID: 32976068 DOI: 10.1080/09273948.2020.1807024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE We analyzed the frequency, viability, and genetic characteristics of T. gondii in pork heart samples.Methods: Thirty-five fresh pork samples were purchased in a slaughterhouse in Erechim city. The DNA was extracted and qPCR was performed. T. gondii genotyping was performed using PCR-RFLP analysis. Positive samples were digested and inoculated in mice for viability analysis.Results: Our results showed that T. gondii DNA was detected in 25.7% of the pork heart samples and genotyping revealed one new atypical strain. The viability analyses demonstrated that 40% of mice presented clinical signs of T. gondii infection. qPCR was positive in the lung, liver, and brain of mice that presented clinical signs of T. gondii infection. Also, the histopathology analysis showed retinal disorganization, retinal detachment, inflammatory cell infiltration, and fibrosis in the eyes analyzed.Conclusion: Our findings have shown that pork eat from southern Brazil may contain live T. gondii that could be associated with toxoplasmosis.
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Affiliation(s)
- Deise F Costa
- Department of Ophthalmology, Federal University of Sao Paulo, Sao Paulo, Brazil.,Department of Ophthalmology, McGill University Ocular Pathology Laboratory, Montreal, Canada
| | - Rafael Pedro Madeira
- Department of Pharmaceutical Sciences, Federal University of Sao Paulo, Diadema, Brazil
| | | | - Heloisa Nascimento
- Department of Ophthalmology, Federal University of Sao Paulo, Sao Paulo, Brazil
| | | | | | | | | | - Miguel N Burnier
- Department of Ophthalmology, McGill University Ocular Pathology Laboratory, Montreal, Canada
| | - Marcia Serva Lowen
- Department of Pathology, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - João Luis Garcia
- Protozoology Laboratory, Preventive Veterinary Medicine Department, Universidade Estadual De Londrina, Londrina, PR, Brazil
| | - Ricardo Gava
- Laboratory of Molecular Biology of Parasites and Fungi, Center of Parasitology and Mycology, Adolfo Lutz Institute, Sao Paulo, Brazil
| | - Vera Lucia Pereira-Chioccola
- Laboratory of Molecular Biology of Parasites and Fungi, Center of Parasitology and Mycology, Adolfo Lutz Institute, Sao Paulo, Brazil
| | | | - Rubens Belfort
- Department of Ophthalmology, Federal University of Sao Paulo, Sao Paulo, Brazil
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