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Di Cesare A, Zanet S, Traversa D, Colombo M, Tielemans E, Beugnet F, Ferroglio E. Efficacy of a combination of esafoxolaner, eprinomectin and praziquantel (NexGard ® Combo) against Thelazia callipaeda in naturally infected cats. Parasite 2024; 31:10. [PMID: 38415717 PMCID: PMC10901074 DOI: 10.1051/parasite/2024008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/22/2024] [Indexed: 02/29/2024] Open
Abstract
This clinical study assessed the efficacy of a topical combination of esafoxolaner, eprinomectin and praziquantel (NexGard® Combo) in treating cats naturally infected with the eyeworm Thelazia callipaeda (Nematoda, Thelaziidae). On Study Day (SD) 0, sixteen client-owned cats with eyeworm infection were allocated to an untreated control group (G1, 8 cats) or to a NexGard® Combo treated group (G2, 8 cats) and subjected to ocular examination. Cats in G2 received the treatment as per label recommendations. On SD 7 and 14 (±1), cats were examined for the presence of eyeworms and clinical signs. On SD 14, eyeworms were collected and counted. On SD 7 and 14, all cats in G1 were still infected with eyeworms, while G2 cats were free from eyeworms on SD 7 and 14, demonstrating 100% efficacy (p < 0.0001). All collected eyeworms were morphologically and molecularly confirmed to be T. callipaeda. On SD 0, fifteen out of the sixteen cats (7 in G1 and 8 in G2) displayed inflammatory ocular signs. On SD 7, all eight untreated cats and seven treated cats displayed inflammatory ocular signs. On SD 14, five out of eight G2 treated cats had recovered, while the eight untreated cats still displayed inflammatory ocular signs. The treatment significantly reduced lacrimation and conjunctivitis (p = 0.0001). No adverse reactions occurred. This clinical study provides evidence that NexGard® Combo is highly safe and effective for the treatment of T. callipaeda infection in cats under field conditions.
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Affiliation(s)
- Angela Di Cesare
- Department of Veterinary Medicine, University of Teramo, Località Piano d'Accio, 64100 Teramo, Italy
| | - Stefania Zanet
- Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095 Grugliasco, Turin, Italy
| | - Donato Traversa
- Department of Veterinary Medicine, University of Teramo, Località Piano d'Accio, 64100 Teramo, Italy
| | - Mariasole Colombo
- Department of Veterinary Medicine, University of Teramo, Località Piano d'Accio, 64100 Teramo, Italy
| | - Eric Tielemans
- Boehringer Ingelheim Animal Health, 29 Avenue Tony Garnier, 69007 Lyon, France
| | - Frederic Beugnet
- Boehringer Ingelheim Animal Health, 29 Avenue Tony Garnier, 69007 Lyon, France
| | - Ezio Ferroglio
- Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095 Grugliasco, Turin, Italy
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Liu Z, Yu C, Tan X, Chen N, Jin Y. Epidemiology of Ocular Thelaziosis in Domestic Dogs in Beijing. Pathogens 2024; 13:166. [PMID: 38392904 PMCID: PMC10892172 DOI: 10.3390/pathogens13020166] [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: 12/22/2023] [Revised: 01/21/2024] [Accepted: 02/11/2024] [Indexed: 02/25/2024] Open
Abstract
Thelazia callipaeda is a zoonotic parasitic nematode that lives in the ocular conjunctival sac of domestic and wild carnivores, lagomorphs, and humans, with Phortica spp. as its intermediate host. At present, the important role that domestic dogs play in thelaziosis has been studied in many countries. However, Beijing, which is the first city in China to experience human thelaziosis, has not yet conducted a comprehensive epidemiological analysis of the disease. In this study, we analyzed risk factors (region, season, age, sex, breed, size, living environment, diet, country park travel history, immunization history, anthelmintic treatment history, and ocular clinical symptoms) associated with the prevalence of thelaziosis in domestic dogs in Beijing. The overall prevalence of T. callipaeda in the study area was 3.17% (102/3215 domestic dogs; 95% CI 2.57-3.78%). The results of the risk factor analysis showed that thelaziosis in domestic dogs from Beijing was significantly correlated with regional distribution, seasonal distribution, country park travel history, and anthelmintic treatment history (p < 0.05). In summer and autumn, domestic dogs living in mountainous areas, with a history of country park travel and without deworming were 4.164, 2.382, and 1.438 times more infected with T. callipaeda than those living in plain areas without a history of country park travel and with a history of deworming (OR = 4.164, OR = 2.382, OR = 1.438, respectively). T. callipaeda-infected domestic dogs did not always show any ocular clinical symptoms, while symptomatic domestic dogs were mainly characterized by moderate symptoms. The results indicate that in summer and autumn, preventive anthelmintic treatment should be strengthened for domestic dogs with a country park travel history or those living in mountain areas. At the same time, we should be vigilant about taking domestic dogs to play in country parks or mountainous areas during summer and autumn because this may pose a potential risk of the owner being infected with T. callipaeda.
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Affiliation(s)
| | | | | | | | - Yipeng Jin
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Rd, Haidian District, Beijing 100193, China; (Z.L.); (C.Y.); (X.T.); (N.C.)
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Bertos E, Sánchez-Cerdá M, Virgós E, Gil-Sánchez JM, Moleón M. Thelazia callipaeda as a potential new threat to european wildcats: insights from an eco-epidemiological study. Vet Res Commun 2023; 47:2153-2160. [PMID: 36648738 DOI: 10.1007/s11259-023-10071-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/07/2023] [Indexed: 01/18/2023]
Abstract
Global warming and displacement of vectors and wild and domestic hosts by humans greatly change host-parasite interactions and parasite transmission rates. Thelazia callipaeda Railliet and Henry, 1910 (Spirurida: Thelaziidae) is a zoonotic parasite rapidly colonizing Europe from its Asian native range. This nematode is vectored by Phortica flies and may cause ocular disorders, such as keratitis and corneal ulcers, in wild mammals, dogs, cats and humans. With the aim of detecting possible threats for the European wildcat (Felis silvestris) in one of its last Mediterranean strongholds, we initiated in 2017 a long-term monitoring program in Sierra Arana (southeastern Spain), which includes exploring its epidemiological and spatial relationships with domestic cats (Felis catus). During routine medical check-ups, we detected ocular nematodes in 3 of 17 (17.6%) wildcats and 1 of 23 (4.3%) domestic cats tested, confirmed to be T. callipaeda by microscopic and molecular analyses. This nematode species was first detected in the study area in 2021. To our knowledge, this is the first case of infection in wildcats in Spain. Through telemetry, we detected little spatial overlap between the home ranges of wildcats and domestic cats, which seems to be sufficient to facilitate the inter-specific transmission of T. callipaeda. Our findings suggest that this pathogen could be a new threat to the wildcat, a locally endangered wild felid. Further eco-epidemiological monitoring and sanitary control of domestic cats will be strongly needed, especially given the ongoing global warming scenario.
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Affiliation(s)
- Elena Bertos
- Department of Zoology, University of Granada, Granada, Spain.
| | - Mariola Sánchez-Cerdá
- Harmusch - Asociación de Estudio y Conservación de Fauna, Almodóvar del Campo, Ciudad Real, Spain
| | - Emilio Virgós
- Department of Biology and Geology, Physics and Inorganic Chemistry, University Rey Juan Carlos, Móstoles, Madrid, Spain
| | - José M Gil-Sánchez
- Department of Zoology, University of Granada, Granada, Spain
- Harmusch - Asociación de Estudio y Conservación de Fauna, Almodóvar del Campo, Ciudad Real, Spain
| | - Marcos Moleón
- Department of Zoology, University of Granada, Granada, Spain
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Zanet S, Morelli S, Di Cesare A, Bò S, Traversa D, Lebon W, Beugnet F, Simonato G, Ferroglio E. Efficacy of fipronil/(S)-methoprene/eprinomectin/praziquantel (Broadline ®) against Thelazia callipaeda in naturally infected cats. Parasit Vectors 2021; 14:477. [PMID: 34526129 PMCID: PMC8442459 DOI: 10.1186/s13071-021-04983-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/28/2021] [Indexed: 11/13/2022] Open
Abstract
Background The present clinical field trial was conducted to assess the efficacy of a broad-spectrum parasiticide spot-on formulation containing eprinomectin (Broadline®) against Thelazia callipaeda eyeworm in naturally infected cats. Methods Fifteen privately owned cats harboring at least one live adult T. callipaeda were included in the study. Cats were randomly allocated to an untreated control group of seven cats or to a Broadline®-treated group of eight cats. Cats were treated on Day 0; ocular examinations were performed at inclusion and on Days 7 and 14; eyeworms were recovered and counted on Day 14. The primary efficacy assessment was based on group comparison of number of T. callipaeda on Day 14. Results Seven days after treatment, six of eight treated cats were negative for eyeworm infection per visual examination, and on Day 14 no eyeworms were found in the treated cats while the seven untreated cats were still infected (geometric mean: 1.97). All cats had inflammatory ocular signs at inclusion; on Day 14, five of eight treated cats had recovered while all untreated control cats were still symptomatic. All collected parasites were confirmed to be T. callipaeda by morphology and molecular characterization. Conclusions A single treatment with Broadline® provided 100% efficacy against feline thelaziosis and improved related ocular inflammation signs. Graphical abstract ![]()
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Affiliation(s)
- Stefania Zanet
- Department of Veterinary Sciences, University of Turin, Turin, Italy
| | - Simone Morelli
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Angela Di Cesare
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy.
| | - Stefano Bò
- Ambulatorio Veterinario Bo-Ferro, Turin, Italy
| | - Donato Traversa
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | | | - Giulia Simonato
- Department of Animal Medicine, Production and Health, University of Padua, Padua, Italy
| | - Ezio Ferroglio
- Department of Veterinary Sciences, University of Turin, Turin, Italy
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Marino V, Montoya A, Mascuñan C, Domínguez I, Gálvez R, Hernández M, Zenker C, Checa R, Sarquis J, Barrera JP, Portero M, Miró G. Feline thelaziosis ( Thelazia callipaeda) in Spain: state-of-the-art and first prophylactic trial in cats. J Feline Med Surg 2021; 23:1117-1128. [PMID: 33719674 DOI: 10.1177/1098612x21997625] [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: 11/16/2022]
Abstract
OBJECTIVES Thelaziosis caused by the nematode Thelazia callipaeda (Spirurida, Thelaziidae) affects the eyes of domestic and wild carnivores, lagomorphs and even humans. The role of cats in spreading thelaziosis remains unclear. The present study assesses the current status of feline T callipaeda infection in Spain and presents the results of the first prophylactic trial conducted in this species. METHODS We retrospectively analysed the occurrence of feline thelaziosis (study 1), examined its prevalence based on cross-sectional sampling of endemic areas (study 2), and assessed the therapeutic/prophylactic benefits of a spot-on (moxidectin) and therapeutic efficacy of an eye drop (ivermectin) formulation (study 3). RESULTS In study 1, 69 Thelazia-infected cats were examined. Autochthonous cases were detected in 18/26 municipalities surveyed in Spain, which corresponds to 88.4% (n = 61/69) of the total number of cases. In study 2, 74 cats (20 from La Vera region and 54 from Orense province) were examined from 2011 to 2013. Ten of these cats (13.5%) were infected with T callipaeda. The infection prevalence was 40% (n = 8/20) in La Vera and 3.7% (n = 2/54) in Orense. The therapeutic efficacy of ivermectin was assessed over a summer (2011) in 12 cats, while that of moxidectin was examined over a 17-month period in seven cats. Four of these seven cats were subsequently included in an all-year-round prophylaxis trial. Treatment efficacy ranged from 91.7% (ivermectin) on day 28 after treatment to 100% (moxidectin) on day 14. Moxidectin prevented reinfections in cats. CONCLUSIONS AND RELEVANCE Our data confirm the endemic status of T callipaeda infection in Spain, revealing its high prevalence in cats living in known endemic areas. Moxidectin was effective in treating and preventing infection. We strongly recommend the inclusion of thelaziosis in the differential diagnosis of pets and humans presenting with ocular manifestations, along with adequate preventive measures.
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Affiliation(s)
- Valentina Marino
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Ana Montoya
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Carmen Mascuñan
- La Cruz Verde Veterinary Clinic, Miraflores de la Sierra, Madrid, Spain
| | | | - Rosa Gálvez
- Department of Specific Didactics, School of Education and Teacher Training, Autonomous University of Madrid, Madrid, Spain
| | | | - Carla Zenker
- La Plaza Veterinary Clinic, El Escorial, Madrid, Spain
| | - Rocío Checa
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Juliana Sarquis
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Juan Pedro Barrera
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Miriam Portero
- Veterinary Teaching Hospital, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Guadalupe Miró
- Animal Health Department, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
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do Vale B, Lopes AP, da Conceição Fontes M, Silvestre M, Cardoso L, Coelho AC. Systematic review on infection and disease caused by Thelazia callipaeda in Europe: 2001-2020. Parasite 2020; 27:52. [PMID: 32996882 PMCID: PMC7526429 DOI: 10.1051/parasite/2020048] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/04/2020] [Indexed: 01/12/2023] Open
Abstract
Cases of thelaziosis by Thelazia callipaeda have been increasing considerably in Europe throughout the 21st century, with recent emphasis on Eastern Europe. A systematic review was conducted using defined search terms across three major databases and, additionally, with the examination of the references of the 56 articles selected. Available information about epidemiological and clinical features of all cases of thelaziosis by T. callipaeda in companion animals, wildlife and humans was extracted, evaluated and subjected to qualitative and quantitative analysis. In all cross-sectional studies about dogs, cats and red foxes, males were more frequently infected than females (dogs: p = 0.0365; cats: p = 0.0164; red foxes: p = 0.0082). Adult dogs seem to be more prone to infection (p < 0.0001), as well as large-sized dogs (p < 0.0001), and companion animals that live exclusively outdoors (p < 0.0001). Dogs and red foxes involved in these cross-sectional studies harboured significantly more female than male nematodes (p < 0.0001). Thelaziosis by T. callipaeda is far from controlled in Europe. Only through updated epidemiological data, knowledge improvement and awareness can correct diagnosis and appropriate treatment and prevention be ensured to tackle this zoonosis.
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Affiliation(s)
- Beatriz do Vale
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD) 5000-801 Vila Real Portugal
| | - Ana Patrícia Lopes
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD) 5000-801 Vila Real Portugal
- Animal and Veterinary Research Centre, UTAD 5000-801 Vila Real Portugal
| | - Maria da Conceição Fontes
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD) 5000-801 Vila Real Portugal
- Animal and Veterinary Research Centre, UTAD 5000-801 Vila Real Portugal
| | - Mário Silvestre
- Animal and Veterinary Research Centre, UTAD 5000-801 Vila Real Portugal
- Department of Zootechnics, ECAV, UTAD 5000-801 Vila Real Portugal
| | - Luís Cardoso
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD) 5000-801 Vila Real Portugal
- Animal and Veterinary Research Centre, UTAD 5000-801 Vila Real Portugal
| | - Ana Cláudia Coelho
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD) 5000-801 Vila Real Portugal
- Animal and Veterinary Research Centre, UTAD 5000-801 Vila Real Portugal
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L M R S, Spoerel S, Wiesner L, Klein M, Pantchev N, Taubert A, Hermosilla C. Ophthalmic Thelazia callipaeda infections: first feline and new canine imported cases in Germany. Parasitol Res 2020; 119:3099-3104. [PMID: 32627079 PMCID: PMC7431390 DOI: 10.1007/s00436-020-06785-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/22/2020] [Indexed: 01/12/2023]
Abstract
The first case of feline ocular Thelazia callipaeda infection and two new canine imported infections in West Germany are here described. The three animals had a history of recent travel to/from other countries. The young adult cat imported from Spain presented an intermittent unilateral ocular discharge. During in-depth ophthalmic examination, a single alive nematode was removed from the conjunctival compartment of the affected eye. Referring to the canine cases, an adult female dog originated from Kenya presented epiphora and mucous whitish-grey discharge of the right eye. During flushing of the nasolacrimal duct two small, thin and long nematodes were removed. Furthermore, a male Borzoi racing dog with regular visit to racing tracks in different countries presented ocular mucous discharge. At ophthalmologic examination, two transparent-whitish vital nematodes were removed. All nematode specimens of the three cases were morphologically identified as adult T. callipaeda parasites. The animals were treated orally with milbemycin oxime (2.0 mg/kg; cat) or milbemycin oxime/praziquantel (0.5 mg/kg and 5.0 mg/kg; dogs) twice with 1-week interval resulting in complete resolution of symptoms. The repeated introduction of patent T. callipaeda-infected animals, especially from southern and eastern endemic countries, will ease the establishment of ophthalmic thelaziosis in Northern Europe. The male fruit fly, Phortica variegata, an intermediate host of T. callipaeda, is endemic within European countries. Considering the clinical and zoonotic relevance of ophthalmic thelaziosis, enhanced disease awareness of European medical and veterinarian doctors and in-depth eye examination for proper detection of T. callipaeda are crucial for appropriate anthelmintic treatments and to limit spreading of the infection.
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Affiliation(s)
- Silva L M R
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Schubertstr. 81, 35392, Giessen, Germany.
| | - S Spoerel
- Tierarztpraxis Dr. Kindler, Saarbrücker Allee 7, 65201, Wiesbaden, Germany
| | - L Wiesner
- Tierarztpraxis Dr. Kindler, Saarbrücker Allee 7, 65201, Wiesbaden, Germany
| | - M Klein
- Tierarztpraxis Dr. Klein, Bahnhofstr. 30, 67251, Freinsheim, Germany
| | - N Pantchev
- IDEXX Laboratories, Mörikestr. 28/3, 71636, Ludwigsburg, Germany
| | - A Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Schubertstr. 81, 35392, Giessen, Germany
| | - C Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg, Justus Liebig University Giessen, Schubertstr. 81, 35392, Giessen, Germany
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Spain as a dispersion model for Thelazia callipaeda eyeworm in dogs in Europe. Prev Vet Med 2020; 175:104883. [PMID: 31935667 DOI: 10.1016/j.prevetmed.2020.104883] [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: 06/28/2019] [Revised: 01/02/2020] [Accepted: 01/03/2020] [Indexed: 12/22/2022]
Abstract
Thelazia callipaeda (Spirurida, Thelaziidae) causes ocular infection in carnivorous animals and humans. While growing numbers of companion dogs and sometimes cats are being diagnosed with thelaziosis, little is known about its real spread. As it has been also diagnosed in wild animals and human beings, it is considered a potential emerging zoonotic disease. This study provides information about the spread of the parasite in dogs in Spain since its initial description in 2010 until 2018. The first detection of T. callipaeda in the Principality of Andorra in 2017 is also reported. Two different studies were conducted: a) a survey in which clinical cases from veterinary practices were collected and b) a prevalence study in two endemic areas in western and central Spain (Site 1 La Vera region, Cáceres, and Site 2 El Escorial municipality, Madrid). In total, 1114 cases of thelaziosis were detected in 121 municipalities of Spain and 6 municipalities of Andorra. In 92 out these 127 municipalities, reports were of autochthonous cases. Six hundred twenty-three out of 1114 presented data collection sheet and were included in the statistical analysis: 510 cases identified by veterinarians in Spain and Andorra in Study 1, and 113 cases detected among the 234 dogs (48.3 %) examined in the prevalence study (Study 2). Prevalences were 61.3 % (84/137) for Cáceres and 29.9 % (29/97) for Madrid, being Site 1 significantly more risky (P < 0.0001, odds ratio: 3.72, CI: 2.14-4.47 %) compared to Site 2. Our study updates data for canine thelaziosis reported in the last decade in Spain and Andorra. Results highlight the urgent need for prevention strategies to control the spread of this potential zoonotic disease.
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do Vale B, Lopes AP, da Conceição Fontes M, Silvestre M, Cardoso L, Coelho AC. Thelaziosis due to Thelazia callipaeda in Europe in the 21st century-A review. Vet Parasitol 2019; 275:108957. [PMID: 31630050 DOI: 10.1016/j.vetpar.2019.108957] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 12/17/2022]
Abstract
Thelazia callipaeda was first described at the beginning of the 20th century in Asia, but this eyeworm is now frequently reported in Europe in the 21st century. To date, thelaziosis has been described in the following European countries (in order of appearance): Italy, France, Germany, Switzerland, Spain, Portugal, Belgium, Bosnia and Herzegovina, Croatia, Serbia, Romania, Greece, Bulgaria, Hungary, Slovakia, the United Kingdom, Turkey and Austria. The infected vertebrate host species include domestic carnivores (dogs and cats), wild carnivores (red foxes, wolves, beech martens, wildcats and golden jackals), lagomorphs (brown hares and wild European rabbits) and humans. In Europe, 11 cases of human thelaziosis have been reported, the majority of which are autochthonous. However, some of them have been imported, a fact which highlights the importance of surveillance policies to restrict cross-border spread of the parasite. The objectives of this article are to review key aspects of the epidemiology of T. callipaeda, summarise animal and human cases in Europe and emphasise the importance of education and awareness among veterinarians, physicians (particularly ophthalmologists) and animal, in order to owners to tackle this zoonosis.
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Affiliation(s)
- Beatriz do Vale
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
| | - Ana Patrícia Lopes
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal; Animal and Veterinary Research Centre, UTAD, Vila Real, Portugal
| | - Maria da Conceição Fontes
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal; Animal and Veterinary Research Centre, UTAD, Vila Real, Portugal
| | - Mário Silvestre
- Animal and Veterinary Research Centre, UTAD, Vila Real, Portugal; Department of Zootechnics, ECAV, UTAD, Vila Real, Portugal
| | - Luís Cardoso
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal; Animal and Veterinary Research Centre, UTAD, Vila Real, Portugal.
| | - Ana Cláudia Coelho
- Department of Veterinary Sciences, School of Agrarian and Veterinary Sciences (ECAV), University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal; Animal and Veterinary Research Centre, UTAD, Vila Real, Portugal
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Zottler EM, Bieri M, Basso W, Schnyder M. Intestinal parasites and lungworms in stray, shelter and privately owned cats of Switzerland. Parasitol Int 2019; 69:75-81. [DOI: 10.1016/j.parint.2018.12.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 10/27/2022]
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Ocular thelaziosis due Thelazia callipaeda (Spirurida: Thelaziidae) in Romania: first report in domestic cat and new geographical records of canine cases. Parasitol Res 2018; 117:4037-4042. [DOI: 10.1007/s00436-018-6122-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/15/2018] [Indexed: 10/28/2022]
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12
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Farkas R, Takács N, Gyurkovszky M, Henszelmann N, Kisgergely J, Balka G, Solymosi N, Vass A. The first feline and new canine cases of Thelazia callipaeda (Spirurida: Thelaziidae) infection in Hungary. Parasit Vectors 2018; 11:338. [PMID: 29884211 PMCID: PMC5993998 DOI: 10.1186/s13071-018-2925-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/29/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In Europe, the first Thelazia callipaeda infections were found in the eyes of some dogs in Italy three decades ago. Since that time, this vector-borne nematode species has been diagnosed in domestic and wild carnivores and humans in some western European countries. During the last few years, autochthonous thelaziosis of dogs, red foxes, cats and humans has also been reported from eastern Europe. The first cases of ocular infections caused by T. callipaeda have been described in dogs living in the eastern and southern part of Slovakia and Hungary. METHODS Whitish parasites found in the conjuctival sac and/or under the third eyelid of one or both eyes of animals were removed and morphologically identified according to species and sex. To confirm the morphological identification with molecular analysis a single step conventional PCR was carried out. RESULTS A total of 116 adult worms (1-37 per dog, median: 7, IQR: 14.5 and 7 from a cat) were collected from the eyes of 11 animals. Nematodes were identified as T. callipaeda according to the morphological keys and molecular analysis. The sequences of a portion of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene were identical to those representing T. callipaeda haplotype 1, previously reported in neighbouring and other European countries. Since the infected cat and dogs had never travelled abroad, all of the cases were autochthonous thelaziosis. CONCLUSIONS The present study reports the first case of thelaziosis in a cat and new cases in 10 dogs found in the southern and northern region of Hungary, respectively. Further studies are needed to clarify whether wild carnivores (e.g. red foxes, golden jackals) may act as reservoirs of this eyeworm species in the country.
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Affiliation(s)
- Róbert Farkas
- Department of Parasitology and Zoology, University of Veterinary Medicine, Budapest, Hungary.
| | - Nóra Takács
- Department of Parasitology and Zoology, University of Veterinary Medicine, Budapest, Hungary
| | - Mónika Gyurkovszky
- Department of Parasitology and Zoology, University of Veterinary Medicine, Budapest, Hungary
| | | | | | - Gyula Balka
- Department of Pathology, University of Veterinary Medicine, Budapest, Hungary
| | - Norbert Solymosi
- Centre for Bioinformatics, University of Veterinary Medicine, Budapest, Hungary
| | - Andrea Vass
- Népkerti Veterinary Clinic, Miskolc, Hungary
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Udiz-Rodríguez R, Garcia-Livia K, Valladares-Salmerón M, Dorta-Almenar MN, Martín-Carrillo N, Martin-Alonso A, Izquierdo-Rodriguez E, Feliu C, Valladares B, Foronda P. First ocular report of Gurltia paralysans (Wolffhügel, 1933) in cat. Vet Parasitol 2018; 255:74-77. [PMID: 29773140 PMCID: PMC7111310 DOI: 10.1016/j.vetpar.2018.03.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/23/2018] [Accepted: 03/30/2018] [Indexed: 11/18/2022]
Abstract
A two-year-old cat from Tenerife, Canary Islands (Spain), presented with two months history of uveitis in the left eye. It had been treated for two months but still showed an active uveitis. After new treatment, eye examination showed a mobile worm in the anterior chamber. Following surgical removal, the worm was obtained. Morphological study revealed that it was a male metastrongyloid nematode (Nematoda: Metastrongyloidea) with caudal bursa and two similar spicules. Molecular tools based on the 18Sr RNA gene sequence identified the parasite as Gurltia paralysans, which is a neurotropic nematode previously found in South America. Therefore, this article describes the first report of ophthalmic case of parasitism by G. paralysans, and cites for first time this species out of South America.
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Affiliation(s)
- Raquel Udiz-Rodríguez
- Centro de Referencia en Oftalmología animal Visión Veterinaria, Avda. de los Majuelos, 93, Tenerife, 38108, Spain
| | - Katherine Garcia-Livia
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain
| | | | - Maria Naira Dorta-Almenar
- Centro de Referencia en Oftalmología animal Visión Veterinaria, Avda. de los Majuelos, 93, Tenerife, 38108, Spain
| | - Natalia Martín-Carrillo
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain
| | - Aaron Martin-Alonso
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain
| | - Elena Izquierdo-Rodriguez
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain
| | - Carlos Feliu
- Secció de Parasitologia, Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona, Barcelona, 08028, Spain
| | - Basilio Valladares
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain
| | - Pilar Foronda
- Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias, Universidad de La Laguna, Avda. Astrofisico F Sanchez s/n, Tenerife, 38203, Spain.
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Marino V, Gálvez R, Colella V, Sarquis J, Checa R, Montoya A, Barrera JP, Domínguez S, Lia RP, Otranto D, Miró G. Detection of Thelazia callipaeda in Phortica variegata and spread of canine thelaziosis to new areas in Spain. Parasit Vectors 2018; 11:195. [PMID: 29558995 PMCID: PMC5859453 DOI: 10.1186/s13071-018-2773-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 03/06/2018] [Indexed: 11/26/2022] Open
Abstract
Background The fruit fly Phortica variegata (Drosophilidae: Steganinae) feeds on the ocular secretions of animals and humans, and has been described as an intermediate host of the eye worm Thelazia callipaeda (Spirurida: Thelaziidae) in Italy. Despite the increased detection of T. callipaeda in many European countries, information about its vector role in natural conditions is still limited. In the Iberian Peninsula, thelaziosis caused by T. callipaeda has been reported in dogs, cats, red foxes, wild rabbits and humans. Methods In the last seven years, we have detected increased numbers of cases of canine thelaziosis at three locations in mainland Spain: Site 1, La Vera region (Cáceres Province, central-western Spain; 51 cases); Site 2, El Escorial municipality (Madrid Community, central Spain; 23 cases); and Site 3, Miraflores de la Sierra municipality (Madrid Community, central Spain; 41 cases). Site 1 is considered endemic for T. callipaeda while the other two sites have been recently recognised as risk zones for T. callipaeda infection. Results From June 2016 to September 2017, 2162 flies were collected and morphologically identified as Phortica spp. (Site 1, n = 395; Site 2, n = 1544; and Site 3, n = 223). Upon dissection, third-stage T. callipaeda larvae were found in two out of 155 flies examined from Site 1, and both these larvae tested molecularly positive for the eye worm. Of the 395 flies collected from Site 1, 371 were molecularly processed for arthropod species identification and T. callipaeda detection. All 371 flies were identified as P. variegata and 28 (7.5%; 95% CI: 4.8–10%) tested positive for T. callipaeda DNA haplotype 1. Conclusions Our findings indicate that T. callipaeda circulates among dogs and P. variegata in Spain, where zoonotic cases have been also reported. The co-existence of canine thelaziosis and Phortica spp. in geographical areas previously considered free of the eye worm indicates a risk of infection for both animals and humans living in this region.
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Affiliation(s)
- Valentina Marino
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Rosa Gálvez
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Vito Colella
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy
| | - Juliana Sarquis
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Rocío Checa
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Ana Montoya
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Juan P Barrera
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Sonia Domínguez
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Riccardo Paolo Lia
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Valenzano, Bari, Italy
| | - Guadalupe Miró
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain.
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Gordon CA, McManus DP, Jones MK, Gray DJ, Gobert GN. The Increase of Exotic Zoonotic Helminth Infections: The Impact of Urbanization, Climate Change and Globalization. ADVANCES IN PARASITOLOGY 2016; 91:311-97. [PMID: 27015952 DOI: 10.1016/bs.apar.2015.12.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Zoonotic parasitic diseases are increasingly impacting human populations due to the effects of globalization, urbanization and climate change. Here we review the recent literature on the most important helminth zoonoses, including reports of incidence and prevalence. We discuss those helminth diseases which are increasing in endemic areas and consider their geographical spread into new regions within the framework of globalization, urbanization and climate change to determine the effect these variables are having on disease incidence, transmission and the associated challenges presented for public health initiatives, including control and elimination.
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Affiliation(s)
- Catherine A Gordon
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Donald P McManus
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Malcolm K Jones
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia; School of Veterinary Science, University of Queensland, Brisbane, QLD, Australia
| | - Darren J Gray
- Research School of Population Health, The Australian National University, Canberra, ACT, Australia
| | - Geoffrey N Gobert
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
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Diakou A, Di Cesare A, Tzimoulia S, Tzimoulias I, Traversa D. Thelazia callipaeda (Spirurida: Thelaziidae): first report in Greece and a case of canine infection. Parasitol Res 2015; 114:2771-5. [DOI: 10.1007/s00436-015-4457-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 03/25/2015] [Indexed: 11/29/2022]
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17
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Diakou A, Di Cesare A, Tzimoulia S, Tzimoulias I, Traversa D. Thelazia callipaeda (Spirurida: Thelaziidae): first report in Greece and a case of canine infection. Parasitol Res 2015. [PMID: 25843574 DOI: 10.1007/s00436–015–4457–4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The eyeworm Thelazia callipaeda has been reported in different European countries, i.e. Italy, France, Germany, Switzerland, Spain, Portugal, Bosnia and Herzegovina, Croatia and Romania. The present article describes the first autochthonous case of ocular thelaziosis in a dog from Greece, thus revealing a new spot of infection in Europe. The dog in this case report, most likely infected at the northern borders of Greece, was referred to a private veterinary practice with conjunctivitis, oedema, keratitis, epiphora and mucoid discharge in both eyes. Seventy-seven nematodes were removed from both eyes, and the dog was treated with two subcutaneous injections of ivermectin 14 days apart, in combination with a topical antimicrobial medication. The parasites were morphologically and molecularly identified as T. callipaeda. Although in Greece there is no information about the presence and distribution of the fruit fly Phortica variegata, i.e. the intermediate host of T. callipaeda, the location where the dog was infected is environmentally suitable for its development. The present report of this zoonotic parasitosis indicates that in Greece, along with endemic areas in Spain and Italy, T. callipaeda is currently reaching its southernmost distribution limit in Europe.
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Affiliation(s)
- Anastasia Diakou
- Laboratory of Parasitology and Parasitic Diseases, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece,
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Mihalca AD, D'Amico G, Scurtu I, Chirilă R, Matei IA, Ionică AM. Further spreading of canine oriental eyeworm in Europe: first report of Thelazia callipaeda in Romania. Parasit Vectors 2015; 8:48. [PMID: 25623605 PMCID: PMC4316761 DOI: 10.1186/s13071-015-0663-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 01/15/2015] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Despite the increasing number of reports of autochthonous cases of ocular thelaziosis in dogs in several European countries, and the evident emergence of human cases, the distribution and spreading potential of this parasite is far for being fully known. In Romania, despite intensive surveillance performed over recent years on the typical hosts of T. callipaeda, the parasite has not been found until now. METHODS In October 2014 a German Shepherd was presented for consultation to a private veterinary practice from western Romania with a history of unilateral chronic conjunctivitis. Following a close examination of the affected eye, nematodes were noticed in the conjunctival sac. The specimens collected were used for morphological examination (light microscopy) and molecular analysis (amplification of the cytochrome c oxidase subunit 1 gene, followed by sequencing). RESULTS Thirteen nematodes were collected, all identified morphologically as T. callipaeda. The history of the dog revealed no travel outside Romania, and during the last year, not even outside the home locality. The BLAST analysis of our sequence showed a 100% similarity T. callipaeda haplotype h1. CONCLUSIONS This is the first report of T. callipaeda in Romania, which we consider to be with autochthonous transmission. These findings confirm the spreading trend of T callipaeda and the increased risk of emerging vector-borne zoonoses.
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Affiliation(s)
- Andrei Daniel Mihalca
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Gianluca D'Amico
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Iuliu Scurtu
- Department of Internal Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Ramona Chirilă
- Faculty of Environmental Protection, University of Oradea, Strada General Magheru, Oradea, 410048, Romania.
| | - Ioana Adriana Matei
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Angela Monica Ionică
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
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Mihalca AD, D'Amico G, Scurtu I, Chirilă R, Matei IA, Ionică AM. Further spreading of canine oriental eyeworm in Europe: first report of Thelazia callipaeda in Romania. Parasit Vectors 2015. [PMID: 25623605 DOI: 10.1186/s13071–015–0663–2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Despite the increasing number of reports of autochthonous cases of ocular thelaziosis in dogs in several European countries, and the evident emergence of human cases, the distribution and spreading potential of this parasite is far for being fully known. In Romania, despite intensive surveillance performed over recent years on the typical hosts of T. callipaeda, the parasite has not been found until now. METHODS In October 2014 a German Shepherd was presented for consultation to a private veterinary practice from western Romania with a history of unilateral chronic conjunctivitis. Following a close examination of the affected eye, nematodes were noticed in the conjunctival sac. The specimens collected were used for morphological examination (light microscopy) and molecular analysis (amplification of the cytochrome c oxidase subunit 1 gene, followed by sequencing). RESULTS Thirteen nematodes were collected, all identified morphologically as T. callipaeda. The history of the dog revealed no travel outside Romania, and during the last year, not even outside the home locality. The BLAST analysis of our sequence showed a 100% similarity T. callipaeda haplotype h1. CONCLUSIONS This is the first report of T. callipaeda in Romania, which we consider to be with autochthonous transmission. These findings confirm the spreading trend of T callipaeda and the increased risk of emerging vector-borne zoonoses.
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Affiliation(s)
- Andrei Daniel Mihalca
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Gianluca D'Amico
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Iuliu Scurtu
- Department of Internal Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Ramona Chirilă
- Faculty of Environmental Protection, University of Oradea, Strada General Magheru, Oradea, 410048, Romania.
| | - Ioana Adriana Matei
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
| | - Angela Monica Ionică
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Faculty of Veterinary Medicine, Calea Mănăștur 3-5, Cluj-Napoca, 400372, Romania.
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Maia C, Catarino AL, Almeida B, Ramos C, Campino L, Cardoso L. Emergence of Thelazia callipaeda Infection in Dogs and Cats from East-Central Portugal. Transbound Emerg Dis 2014; 63:416-21. [PMID: 25382165 DOI: 10.1111/tbed.12284] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Indexed: 12/01/2022]
Abstract
The eyeworm Thelazia callipaeda (Spirurida, Thelaziidae) infects domestic animals, wildlife and human beings, and is considered an emerging pathogen in Europe. This study aimed at investigating the prevalence and risk factors of T. callipaeda infection in dogs and cats from east-central Portugal, a region where the parasite was previously detected in two red foxes (Vulpes vulpes). Thelazia callipaeda was found in 22 (3.8%) of 586 dogs and in four (23.5%) of 17 cats. A total of 178 adult worms (71.9% of females and 28.1% of males) were collected from the conjunctiva of the infected dogs. The number of worms collected per dog ranged from 1 to 35 (average ± standard deviation: 8.08 ± 9.49), with four dogs (18.2%) harbouring only a single parasite. Worms were gathered from dogs throughout all months of the year. A total of 17 adult worms (64.7% of females and 35.3% of males) were obtained from cats. The number of worms per cat ranged from 1 to 14 (4.3 ± 6.5), with three cats (75.0%) having a single parasite. Eyeworm infection was statistically more prevalent in pastoral and farm dogs, in those dogs with contact with other animals and in dogs with ocular manifestations. T. callipaeda is endemic in the east-central part of Portugal, reportedly infecting domestic (dogs and cats) and wild carnivores (red foxes) and evidencing a southerly dissemination. Future investigations should be focused on determining the local distribution and density of the insect vector (Phortica variegata) in this geographical area. This emergent zoonosis should be included by veterinarians, physicians and ophthalmologists in the differential diagnosis of ocular manifestations in their patients, particularly in areas where T. callipaeda is endemic.
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Affiliation(s)
- C Maia
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisboa, Portugal.,Centro de Malária e outras Doenças Tropicais, IHMT-UNL, Lisboa, Portugal
| | - A L Catarino
- VetCoa - Serviços Veterinários, Sabugal, Portugal
| | - B Almeida
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisboa, Portugal
| | - C Ramos
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisboa, Portugal
| | - L Campino
- Unidade de Parasitologia Médica, Instituto de Higiene e Medicina Tropical (IHMT), Universidade Nova de Lisboa (UNL), Lisboa, Portugal.,Departamento de Ciências Biomédicas e Medicina, Universidade do Algarve, Faro, Portugal
| | - L Cardoso
- Departamento de Ciências Veterinárias, Escola de Ciências Agrárias e Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Vila Real, Portugal.,Parasite Disease Group, Instituto de Biologia Molecular e Celular, Universidade do Porto, Oporto, Portugal
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Wang XL, Guo JY, Wang XL, Ma XL, Wang Y, An CL. Two cases of human thelaziasis as confirmed by mitochondrial cox1 sequencing in China. Pathog Glob Health 2014; 108:298-301. [PMID: 25253041 DOI: 10.1179/2047773214y.0000000153] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Two special cases of human thelaziasis were reported in China: an old farmer with heavy infection by 36 worms and a 7-year-old boy with infection by eight worms. Thelazia callipaeda was morphologically identified and confirmed by mitochondrial cox1 gene sequencing.
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