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Mortari APG, Tagarra LG, de Souza ML, Roman IJ, Ratzlaff FR, Braunig P, de Andrade CM, Cargnelutti JF, Sangioni LA, Vogel FSF. Increased seroprevalence of anti-Toxoplasma gondii antibodies in dogs in southern Brazil after an outbreak of human toxoplasmosis. Parasitol Res 2023; 122:1009-1014. [PMID: 36881160 DOI: 10.1007/s00436-023-07808-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023]
Abstract
Toxoplasmosis is a worldwide disease caused by Toxoplasma gondii, which can infect diverse hosts, including dogs. Although T. gondii infection in dogs is usually subclinical, they are susceptible to infection and develop a specific immune response to the parasite. In 2018, the largest outbreak of human toxoplasmosis in the world occurred in Santa Maria, in southern Brazil; however, the impact of this outbreak on other hosts was not investigated at the time. Considering that dogs often share the same environmental sources of infection as humans, mainly water sources, and that in Brazil, the detection rates of anti-T. gondii immunoglobulin G (IgG) in dogs is very high, this study investigated the frequency of anti-T. gondii IgG in dogs in Santa Maria before and after the outbreak. A total of 2.245 serum samples were analyzed, 1159 collected before the outbreak and 1086 collected after the outbreak. Serum samples were tested for anti-T. gondii antibodies using an indirect immunofluorescence antibody test (IFAT). The infection detection of T. gondii was 16% (185/1159) before the outbreak and 43% (466/1086) after the outbreak. These results showed the infection of dogs with T. gondii and the high frequency of anti-T. gondii antibodies in dogs after the outbreak in humans in 2018, reinforcing water as a possible source of infection and the importance of including toxoplasmosis in the differential diagnosis of dogs.
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Affiliation(s)
- Ana Paula Gnocato Mortari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Larissa Godoy Tagarra
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Michelli Lopes de Souza
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Fabiana Raquel Ratzlaff
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Patricia Braunig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Cínthia Melazzo de Andrade
- Laboratório Clínico Veterinário (LCV), Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa Maria, Av. Roraima, 1000, Hospital Veterinário, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Fernanda Silveira Flôres Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil.
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Blaga R, Fabres V, Leynaud V, Fontaine JJ, Reyes-Gomez E, Briand A, Crosaz O, Lagrange I, Blaizot A, Roux DL, Castillo VR, Maksimov P, Guillot J, Teifke JP, Schares G. Toxoplasma gondii and Alternaria sp.: An Original Association in an Immunosuppressed Dog with Persistent Skin Lesions. Pathogens 2023; 12:pathogens12010114. [PMID: 36678462 PMCID: PMC9865179 DOI: 10.3390/pathogens12010114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/06/2023] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Dogs and cats may suffer from a variety of diseases, mainly immune mediated, that require the administration of immunosuppressive drugs. Such therapies can cause adverse effects either by the toxicity of the drugs or as a consequence of immune suppression and associated opportunistic infections. Here we present an, yet unknown, association of Toxoplasma gondii and Alternaria fungus, within cutaneous lesions in a dog under long-term immunosuppressive therapy. The diagnosis of such infections is laborious and not obvious at first glance, since the clinical signs of cutaneous toxoplasmosis, neosporosis or alternariosis are not specific. A further laboratory confirmation is needed. Therefore, we currently recommend that dogs and cats should undergo serologic testing for toxoplasmosis or neosporosis prior to immunosuppressive therapy and a regular dermatological evaluation during the immunosuppressive therapy.
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Affiliation(s)
- Radu Blaga
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, Laboratoire de Santé Animale, BIPAR, F-94700 Maisons-Alfort, France
- Correspondence: ; Tel.: +33-1-43-96-72-15
| | - Virginie Fabres
- Ecole Nationale Vétérinaire d’Alfort, CHUVA, Unité de Médecine, F-94700 Maisons-Alfort, France
| | - Vincent Leynaud
- Ecole Nationale Vétérinaire d’Alfort, CHUVA, Unité de Médecine, F-94700 Maisons-Alfort, France
| | - Jean-Jacques Fontaine
- Ecole Nationale Vétérinaire d’Alfort, BioPôle, Laboratoire d’anatomo-cytopathologie, F-94700 Maisons-Alfort, France
| | - Edouard Reyes-Gomez
- Ecole Nationale Vétérinaire d’Alfort, BioPôle, Laboratoire d’anatomo-cytopathologie, F-94700 Maisons-Alfort, France
| | - Amaury Briand
- Ecole Nationale Vétérinaire d’Alfort, CHUVA, Unité de Dermatologie, F-94700 Maisons-Alfort, France
| | - Odile Crosaz
- Ecole Nationale Vétérinaire d’Alfort, CHUVA, Unité de Dermatologie, F-94700 Maisons-Alfort, France
| | - Isabelle Lagrange
- Ecole Nationale Vétérinaire d’Alfort, Biopôle, Laboratoire de Biochimie-hématologie, F-94700 Maisons-Alfort, France
| | - Amandine Blaizot
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, Laboratoire de Santé Animale, BIPAR, F-94700 Maisons-Alfort, France
| | - Delphine Le Roux
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, Laboratoire de Santé Animale, BIPAR, F-94700 Maisons-Alfort, France
| | - Veronica Risco Castillo
- Anses, INRAE, Ecole Nationale Vétérinaire d’Alfort, Laboratoire de Santé Animale, BIPAR, F-94700 Maisons-Alfort, France
| | - Pavlo Maksimov
- Institute of Epidemiology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald, Germany
| | - Jacques Guillot
- Oniris, Department of Dermatology, Parasitology, Mycology, F-44300 Nantes, France
| | - Jens Peter Teifke
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, 17493 Greifswald, Germany
| | - Gereon Schares
- Institute of Epidemiology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald, Germany
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Toxoplasma gondii and Neospora caninum Antibodies in Dogs and Cats from Egypt and Risk Factor Analysis. Pathogens 2022; 11:pathogens11121464. [PMID: 36558798 PMCID: PMC9785966 DOI: 10.3390/pathogens11121464] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/30/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Toxoplasma gondii and Neospora caninum are major protozoan parasites of worldwide distribution and significance in veterinary medicine and, for T. gondii, in public health. Cats and dogs, as final hosts for T. gondii and N. caninum, respectively, have a key function in environmental contamination with oocysts and, thus, in parasite transmission. Very little is known about the prevalence of T. gondii infections in dogs and cats in Egypt, and even less about the prevalence of N. caninum in the same hosts. METHODS In the current study, 223 serum samples of both dogs (n = 172) and cats (n = 51) were investigated for specific antibodies to T. gondii and N. caninum using commercially available ELISAs. A risk factor analysis was conducted to identify factors associated with seropositivity. RESULTS & DISCUSSION Exposure to T. gondii was reported in 23.3% of the dogs and in 9.8% of the cats, respectively. In addition, N. caninum-specific antibodies were recorded in 5.8% of dogs and in 3.4% of cats. A mixed infection was found in two dogs (1.2%) and in one cat (2%). Antibodies to T. gondii in dogs were significantly more frequent in dogs aged 3 years or more and in male German Shepherds. As this breed is often used as watchdogs and was the most sampled breed in Alexandria governorate, the purpose "watchdog" (compared to "stray" or "companion"), the male sex, and the governorate "Alexandria" also had a significantly higher seroprevalence for T. gondii. No factors associated with antibodies to N. caninum could be identified in dogs, and no significant factors were determined in cats for either T. gondii or N. caninum infection. Our study substantially adds to the knowledge of T. gondii infection in dogs and cats and presents data on N. caninum infection in cats for the first and in dogs in Egypt for the second time.
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Souza LR, Carvalho MPN, Lopes CEB, Lopes MC, Campos BH, Teixeira ÉPT, Mendes EJ, Santos LP, Caixeta EA, Costa EA, Cunha JLR, Fraiha ALS, Silva ROS, Ramos CP, Varaschin MS, Ecco R. Outbreak of canine distemper and coinfections in a maned wolf (Chrysocyon brachyurus) and in three giant anteaters (Myrmecophaga tridactyla). Braz J Microbiol 2022; 53:1731-1741. [PMID: 35864379 DOI: 10.1007/s42770-022-00783-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 06/10/2022] [Indexed: 11/02/2022] Open
Abstract
Canine distemper outbreak and coinfections in three giant anteaters and in a maned wolf has been described. Three giant anteaters developed respiratory and digestive clinical signs after the introduction of a maned wolf to a Wildlife Rehabilitation Center. The maned wolf and two anteaters died, and one anteater was euthanized. Post mortem and histopathologic exams revealed lesions associated with numerous intraepithelial inclusion bodies, mainly in the respiratory and digestive systems. Infection by distemper virus was confirmed in all animals by RT-PCR and gene sequencing, which revealed the Europe 1/ South America 1 strain, closely related to the strain from Canis familiaris. In addition to distemper, the animals had other comorbidities, such as toxoplasmosis and salmonellosis in the maned wolf and cutaneous candidiasis in an anteater. Considering the chronology of clinical manifestation in both species and the viral characterization, it is possible that the maned wolf was the source of infection to the anteaters. This study demonstrates the importance of implementing biosecurity measures in enclosures that house animals of different species, highlighting the importance of quarantine before introduction of new animals into the same environment.
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Affiliation(s)
- Lucas R Souza
- Sector of Animal Pathology, Department of Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Marcelo P N Carvalho
- Department of Clinic and Surgery, Veterinary School, Sector of Clinic, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Carlos E B Lopes
- Sector of Animal Pathology, Department of Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Marcelo C Lopes
- Sector of Animal Pathology, Department of Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Bruna H Campos
- Department of Clinic and Surgery, Veterinary School, Sector of Clinic, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Érika P T Teixeira
- Instituto Estadual de Florestas (IEF), Rodovia João Paulo II, 4143, Bairro Serra Verde, Belo Horizonte, Minas Gerais, 31630-900, Brazil
| | - Ellen J Mendes
- Instituto Estadual de Florestas (IEF), Rodovia João Paulo II, 4143, Bairro Serra Verde, Belo Horizonte, Minas Gerais, 31630-900, Brazil
| | - Leidilene P Santos
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Eduardo A Caixeta
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Erica A Costa
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - João L R Cunha
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Ana L S Fraiha
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Rodrigo O S Silva
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Carolina P Ramos
- Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Mary S Varaschin
- Sector of Animal Pathology, Universidade Federal de Lavras, Lavras, Minas Gerais, 37200-900, Brazil
| | - Roselene Ecco
- Sector of Animal Pathology, Department of Clinic and Surgery, Veterinary School, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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Pascutti KM, Dolan JK, Porter LT, Gilor S, Harris AN. Case Report: Septic Pericarditis With Achromobacter xyloxidans in an Immunosuppressed Dog. Front Vet Sci 2022; 9:884654. [PMID: 35664856 PMCID: PMC9158496 DOI: 10.3389/fvets.2022.884654] [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: 02/26/2022] [Accepted: 04/29/2022] [Indexed: 11/17/2022] Open
Abstract
A 5-year-old female spayed French Bulldog presented for anorexia and increased respiratory rate. On presentation, she was dyspneic with stridor and increased bronchovesicular sounds. Point-of-care ultrasound identified pericardial effusion. Thoracic radiographs identified pleural effusion, a wide cranial mediastinum, and multifocal unstructured interstitial pulmonary opacities. Bloodwork revealed a moderate leukocytosis characterized by a mature neutrophilia with a left shift, hypoalbuminemia, mildly increased alkaline phosphatase activity, and moderate hypokalemia. Thoracic CT findings revealed moderate pericardial and bilateral pleural effusion, mediastinal effusion, and moderate cranial mediastinal lymphadenopathy. Diagnostic thoracocentesis and pericardiocentesis revealed septic exudates with bacilli. Two days later, a median sternotomy and pericardiectomy were performed. Aerobic cultures of the effusions grew Achromobacter xylosoxidans ss deitrificans. The patient was treated with Amoxicillin-clavulanate and enrofloxacin for 12 weeks and clinically fully recovered. Achromobacter xylosoxidans has not been reported as a cause of purulent pericarditis and pyothorax in a dog. Uniquely, this patient is suspected of developing this infection secondary to immunosuppression.
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Affiliation(s)
- Kristina M. Pascutti
- Department of Small Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL, United States
| | - Jacqueline K. Dolan
- Department of Comparative, Diagnostics and Population Medicine, Gainesville, FL, United States
| | - Lauren T. Porter
- Department of Small Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL, United States
| | - Shir Gilor
- Department of Comparative, Diagnostics and Population Medicine, Gainesville, FL, United States
| | - Autumn N. Harris
- Department of Small Animal Clinical Sciences, University of Florida, College of Veterinary Medicine, Gainesville, FL, United States
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, College of Medicine, Gainesville, FL, United States
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Dorsch MA, Cesar D, Bullock HA, Uzal FA, Ritter JM, Giannitti F. Fatal Toxoplasma gondii myocarditis in an urban pet dog. Vet Parasitol Reg Stud Reports 2022; 27:100659. [PMID: 35012716 DOI: 10.1016/j.vprsr.2021.100659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/02/2021] [Indexed: 01/12/2023]
Abstract
A 70-day-old Boxer dog from a household in Montevideo, Uruguay, died after presenting neurologic, respiratory, and gastrointestinal signs for 6 days. Autopsy findings included lymphadenomegaly, ascites and hepatomegaly. Histopathology revealed severe widespread lymphohistiocytic and plasmacytic myocarditis with cardiomyocyte necrosis, mineralization and numerous intrasarcoplasmic protozoa immunoreactive with anti-Toxoplasma gondii antisera on immunohistochemistry. The protozoa were ultrastructurally confirmed as T. gondii by transmission electron microscopy. Other lesions included diffuse centrilobular hepatocellular necrosis, multifocal lymphohistiocytic portal hepatitis and interstitial nephritis. Other causes of myocarditis, including Neospora caninum, Trypanosoma cruzi, Sarcocystis neurona, canine distemper virus, and canine parvovirus were ruled out by immunohistochemistry. Toxoplasma gondii infections in dogs are usually subclinical; however, clinical disease with fatal outcome can occur. To our knowledge, this is the first report of fatal toxoplasmosis in a dog in Uruguay. This case raises awareness for dogs as sentinels and possible sources of human toxoplasmosis in urban settings in Uruguay.
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Affiliation(s)
- Matías A Dorsch
- Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria (INIA), Estación Experimental La Estanzuela, Ruta 50 km 11, La Estanzuela 70000, Colonia, Uruguay
| | | | | | - Francisco A Uzal
- California Animal Health and Food Safety (CAHFS) Laboratory, University of California Davis, San Bernardino, CA, USA
| | - Jana M Ritter
- Infectious Diseases Pathology Branch, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
| | - Federico Giannitti
- Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria (INIA), Estación Experimental La Estanzuela, Ruta 50 km 11, La Estanzuela 70000, Colonia, Uruguay.
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Beasley EA, Pessôa-Pereira D, Scorza BM, Petersen CA. Epidemiologic, Clinical and Immunological Consequences of Co-Infections during Canine Leishmaniosis. Animals (Basel) 2021; 11:ani11113206. [PMID: 34827938 PMCID: PMC8614518 DOI: 10.3390/ani11113206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 11/24/2022] Open
Abstract
Simple Summary Canine leishmaniosis (CanL), the most severe, visceralizing form of disease caused by Leishmania infantum transmitted by phlebotomine sand flies. CanL is frequently diagnosed in the Mediterranean basin and South America, although it is also found in other regions, including the United States (U.S.). Dogs in these regions are at risk for co-infections, prominently tick-borne diseases. Our review examines epidemiologic, clinical, and immunologic mechanisms found during the most common eight CanL co-infections reported in published literature. Co-infections alter immunologic processes and disease progression impacting CanL diagnosis, therapeutic responses, and prognosis. Abstract Canine leishmaniosis (CanL) is a vector-borne, parasitic disease. CanL is endemic in the Mediterranean basin and South America but also found in Northern Africa, Asia, and the U.S. Regions with both competent sand fly vectors and L. infantum parasites are also endemic for additional infectious diseases that could cause co-infections in dogs. Growing evidence indicates that co-infections can impact immunologic responses and thus the clinical course of both CanL and the comorbid disease(s). The aim for this review is to summarize epidemiologic, clinical, and immunologic factors contributing to eight primary co-infections reported with CanL: Ehrlichia spp., Anaplasma spp., Borrelia spp., Babesia spp., Trypanosoma cruzi, Toxoplasma gondii, Dirofilaria immitis, Paracoccidioides braziliensis. Co-infection causes mechanistic differences in immunity which can alter diagnostics, therapeutic management, and prognosis of dogs with CanL. More research is needed to further explore immunomodulation during CanL co-infection(s) and their clinical impact.
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Affiliation(s)
- Erin A. Beasley
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA 52242, USA; (E.A.B.); (D.P.-P.); (B.M.S.)
- Center for Emerging Infectious Diseases, University of Iowa, Iowa City, IA 52242, USA
| | - Danielle Pessôa-Pereira
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA 52242, USA; (E.A.B.); (D.P.-P.); (B.M.S.)
- Center for Emerging Infectious Diseases, University of Iowa, Iowa City, IA 52242, USA
| | - Breanna M. Scorza
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA 52242, USA; (E.A.B.); (D.P.-P.); (B.M.S.)
- Center for Emerging Infectious Diseases, University of Iowa, Iowa City, IA 52242, USA
| | - Christine A. Petersen
- Department of Epidemiology, College of Public Health, University of Iowa, Iowa City, IA 52242, USA; (E.A.B.); (D.P.-P.); (B.M.S.)
- Center for Emerging Infectious Diseases, University of Iowa, Iowa City, IA 52242, USA
- Correspondence:
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Dubey JP, Murata FHA, Cerqueira-Cézar CK, Kwok OCH, Yang Y, Su C. Toxoplasma gondii infections in dogs: 2009-2020. Vet Parasitol 2020; 287:109223. [PMID: 33160144 DOI: 10.1016/j.vetpar.2020.109223] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/23/2020] [Accepted: 08/24/2020] [Indexed: 01/28/2023]
Abstract
Toxoplasma gondii infections are common in humans and animals worldwide. The present review summarizes worldwide information on the prevalence of clinical and subclinical infections, epidemiology, diagnosis, and genetic diversity of T. gondii in dogs (Canis familiaris) from 2009-2020. Seroprevalence estimates of T. gondii worldwide were tabulated. Reports of high seroprevalence in canine population and high congenital transmission of T. gondii in dogs in Brazil are reviewed. Most reports from China were published in Chinese, and these reports are now summarized here. Dogs have an additional importance in some countries such as China, Vietnam, and Nigeria; whereas in many cities dog meat is sold commercially for human consumption and given to felids, and transmission of T. gondii could occur if meat is not cooked properly. Dogs can ingest T. gondii-infected cat feces and these oocysts remain viable after passage through the digestive tract of the dog; T. gondii DNA was found in feces of dogs from New York City parks in USA. Most clinical canine cases of toxoplasmosis were in immunosuppressed dogs, and ulcerative dermatitis was one of the main presentations. Genetic diversity based on PCR-RFLP markers using DNA derived from 133 viable T. gondii isolates from dogs from several countries is discussed. T. gondii strains from Asia and Americas were more genetically diverse than those from Africa. This review will be of interest to biologists, parasitologists, veterinarians, and public health workers.
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Affiliation(s)
- Jitender P Dubey
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA.
| | - Fernando H A Murata
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - Camila K Cerqueira-Cézar
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - Oliver C H Kwok
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory, Beltsville, MD 20705-2350, USA
| | - Yurong Yang
- Laboratory of Veterinary Pathology, College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Chunlei Su
- Department of Microbiology, University of Tennessee, Knoxville, TN 37996-0845, USA
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